[{"snr_key":"1","id":"MCSNR J0447-6918","name":"J0447-6918","ra":71.8008333333,"dec":-69.3211111111,"klass":"SNR","size_maj_arcmin":6.0,"size_min_arcmin":3.8,"d_arcmin":4.9,"r_arcmin":2.45,"d_pc":71.26756,"pa_deg":320.0,"shape":"ellipse","xray_rate_ctss":0.024,"xray_rate_err":0.011,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.4489795918,"eccentricity":0.7738791177,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":"MCSNR J0447-6919","lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":true,"in_b23":false,"thesis_note":"B17-Candidates-New","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.17,"hr1_err":0.31,"hr2":-0.87,"hr2_err":0.55,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":"22.0-28.0","e0_k22_1e51":"0.17-0.95","n0_k22_cm3":"0.025-0.063"},{"snr_key":"2","id":"MCSNR J0448-6700","name":"J0448-6700","ra":72.105,"dec":-67.0069444444,"klass":"SNR","size_maj_arcmin":5.4,"size_min_arcmin":5.4,"d_arcmin":5.4,"r_arcmin":2.7,"d_pc":78.53976,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.222,"xray_rate_err":0.015,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"BGS06","ref_discovery":"2006ApJS..165..480B (Blair et al. 2006, UV)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"[HP99] 460","lx_1e35":0.46,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.11,"alpha_radio_err":0.05,"s_1ghz_jy":0.0334,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":true,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":true,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.0317,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":"27.0-35.0","e0_k22_1e51":"0.24-2.06","n0_k22_cm3":"0.044-0.088"},{"snr_key":"3","id":"MCSNR J0449-6903","name":"J0449-6903","ra":72.3916666667,"dec":-69.0594444444,"klass":"SNR","size_maj_arcmin":3.6,"size_min_arcmin":3.4,"d_arcmin":3.5,"r_arcmin":1.75,"d_pc":50.9054,"pa_deg":0.0,"shape":"ellipse","xray_rate_ctss":0.03,"xray_rate_err":0.0087,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0571428571,"eccentricity":0.3286710991,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.5,"alpha_radio_err":0.01,"s_1ghz_jy":0.0984,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":true,"in_b23":false,"thesis_note":"B17-Candidates","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.2926,"sii_ha_y21":null,"hr1":-0.13,"hr1_err":0.46,"hr2":0.42,"hr2_err":0.31,"hr3":-0.66,"hr3_err":0.5,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":"9.0-15.0","e0_k22_1e51":"0.01-0.17","n0_k22_cm3":"0.016-0.044"},{"snr_key":"4","id":"MCSNR J0449-6920","name":"J0449-6920","ra":72.3333333333,"dec":-69.3388888889,"klass":"SNR","size_maj_arcmin":3.3,"size_min_arcmin":3.3,"d_arcmin":3.3,"r_arcmin":1.65,"d_pc":47.99652,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.063,"xray_rate_err":0.0096,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"KPS10","ref_discovery":"Klimek, Points & Smith 2010","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":0.07,"nh_1e21":2.33,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.4,"alpha_radio_err":0.08,"s_1ghz_jy":0.0869,"e0_1e51_erg":0.599,"age_l17_yr":21400.0,"n0_cm3":0.291,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.356,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"5","id":"MCSNR J0450-7050","name":"J0450-7050","ra":72.6125,"dec":-70.8375,"klass":"SNR","size_maj_arcmin":6.4,"size_min_arcmin":6.4,"d_arcmin":6.4,"r_arcmin":3.2,"d_pc":93.08416,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.253,"xray_rate_err":0.019,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MFT85","ref_discovery":"Mathewson et al. 1985","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"B0450-709","lx_1e35":0.59,"nh_1e21":0.93,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.41,"alpha_radio_err":0.03,"s_1ghz_jy":0.6893,"e0_1e51_erg":2.96,"age_l17_yr":40600.0,"n0_cm3":0.13,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":70.0,"age_b17_err_kyr":25.0,"age_b17_ref":"Williams et al. (2004)","sigma_1ghz_b17_1e-20":0.205,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.05+0.17-0.04","kt_z26_kev":"0.29+0.02-0.04","tau_z26_1e11":"40.6+429-14.7","fx_z26_1e-14":"27.5\u00b11.4","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"6","id":"MCSNR J0453-6655","name":"J0453-6655","ra":73.2925,"dec":-66.9144444444,"klass":"SNR","size_maj_arcmin":4.3,"size_min_arcmin":4.3,"d_arcmin":4.3,"r_arcmin":2.15,"d_pc":62.54092,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.514,"xray_rate_err":0.018,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"SCM94","ref_discovery":"Smith, Chu & Mac Low 1994","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N4","lx_1e35":1.17,"nh_1e21":0.6,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.58,"alpha_radio_err":0.06,"s_1ghz_jy":0.1116,"e0_1e51_erg":2.78,"age_l17_yr":25000.0,"n0_cm3":0.189,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.104,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.04","kt_z26_kev":"0.75+0.27-0.19","tau_z26_1e11":"0.17+0.09-0.06","fx_z26_1e-14":"40.5\u00b11.1","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"7","id":"MCSNR J0453-6829","name":"J0453-6829","ra":73.4070833333,"dec":-68.4938888889,"klass":"SNR","size_maj_arcmin":3.3,"size_min_arcmin":3.3,"d_arcmin":3.3,"r_arcmin":1.65,"d_pc":47.99652,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":6.23,"xray_rate_err":0.06,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"LHG81","ref_discovery":"1981ApJ...248..925L (Long, Helfand & Grabelsky 1981)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"B0453-685","lx_1e35":13.85,"nh_1e21":0.54,"age_kyr":13500.0,"age_err_kyr":1500.0,"alpha_radio":-0.34,"alpha_radio_err":0.01,"s_1ghz_jy":0.21,"e0_1e51_erg":0.829,"age_l17_yr":11400.0,"n0_cm3":0.577,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":"CC","sn_type_b17":"CCpwn","age_b17_kyr":13.5,"age_b17_err_kyr":1.5,"age_b17_ref":"Williams et al. (2004)","sigma_1ghz_b17_1e-20":0.773,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.02+0.01-0.01","kt_z26_kev":"0.96+0.08-0.07","tau_z26_1e11":"0.12+0.01-0.01","fx_z26_1e-14":"480.5\u00b13.5","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"8","id":"MCSNR J0454-6626","name":"J0454-6626","ra":73.7041666667,"dec":-66.4255555556,"klass":"SNR","size_maj_arcmin":2.5,"size_min_arcmin":2.5,"d_arcmin":2.5,"r_arcmin":1.25,"d_pc":36.361,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.396,"xray_rate_err":0.015,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N11L","lx_1e35":0.63,"nh_1e21":0.35,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.5,"alpha_radio_err":0.03,"s_1ghz_jy":0.1539,"e0_1e51_erg":0.164,"age_l17_yr":11100.0,"n0_cm3":0.166,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":11.0,"age_b17_err_kyr":4.0,"age_b17_ref":"Williams et al. (1999)","sigma_1ghz_b17_1e-20":1.3,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"9","id":"MCSNR J0454-6713","name":"J0454-6713","ra":73.6133333333,"dec":-67.2222222222,"klass":"SNR","size_maj_arcmin":2.4,"size_min_arcmin":2.4,"d_arcmin":2.4,"r_arcmin":1.2,"d_pc":34.90656,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.758,"xray_rate_err":0.0022,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"SCM94","ref_discovery":"Smith, Chu & Mac Low 1994","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N9","lx_1e35":1.58,"nh_1e21":1.32,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.51,"alpha_radio_err":0.03,"s_1ghz_jy":0.0767,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":true,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"TN","age_b17_kyr":29.5,"age_b17_err_kyr":7.5,"age_b17_ref":"Seward et al. (2006)","sigma_1ghz_b17_1e-20":0.247,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.01","kt_z26_kev":"0.42+0.02-0.03","tau_z26_1e11":"306+170-266","fx_z26_1e-14":"55.2\u00b11.1","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"10","id":"MCSNR J0454-7003","name":"J0454-7003","ra":73.5825,"dec":-70.0575,"klass":"SNR","size_maj_arcmin":2.6,"size_min_arcmin":2.4,"d_arcmin":2.5,"r_arcmin":1.25,"d_pc":36.361,"pa_deg":80.0,"shape":"ellipse","xray_rate_ctss":0.048,"xray_rate_err":0.00525,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.08,"eccentricity":0.3846153846,"ref_discovery_code":"Y20","ref_discovery":"Yew 2020, PhD thesis","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.8,"hr1":-0.66,"hr1_err":0.13,"hr2":-0.44,"hr2_err":0.44,"hr3":-0.1,"hr3_err":0.88,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"11","id":"MCSNR J0455-6839","name":"J0455-6839","ra":73.8716666667,"dec":-68.6502777778,"klass":"SNR","size_maj_arcmin":6.4,"size_min_arcmin":5.2,"d_arcmin":5.8,"r_arcmin":2.9,"d_pc":84.35752,"pa_deg":90.0,"shape":"ellipse","xray_rate_ctss":0.757,"xray_rate_err":0.03,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.2068965517,"eccentricity":0.5829611908,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N86","lx_1e35":1.42,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.51,"alpha_radio_err":0.04,"s_1ghz_jy":0.3345,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":true,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":53.0,"age_b17_err_kyr":33.0,"age_b17_ref":"Williams et al. (1999)","sigma_1ghz_b17_1e-20":0.305,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"12","id":"MCSNR J0456-6533","name":"J0456-6533","ra":74.21125,"dec":-65.5455555556,"klass":"SNR","size_maj_arcmin":5.7,"size_min_arcmin":5.7,"d_arcmin":5.7,"r_arcmin":2.85,"d_pc":82.90308,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.18,"xray_rate_err":0.014,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"typed Ia (TN) from Z24 + XMM analysis (Shukla 2024)","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.2,"hr1_err":0.06,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.04","kt_z26_kev":"0.43+0.22-0.10","tau_z26_1e11":"0.30+0.30-0.17","fx_z26_1e-14":"13.9\u00b10.8","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"13","id":"MCSNR J0456-6950","name":"J0456-6950","ra":74.1583333333,"dec":-69.8486111111,"klass":"SNR","size_maj_arcmin":5.4,"size_min_arcmin":4.2,"d_arcmin":4.8,"r_arcmin":2.4,"d_pc":69.81312,"pa_deg":0.0,"shape":"ellipse","xray_rate_ctss":0.01,"xray_rate_err":0.0133,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.25,"eccentricity":0.6285393611,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":true,"in_b23":false,"thesis_note":"B17-Candidates-New","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":"34.0-40.0","e0_k22_1e51":"0.1-0.27","n0_k22_cm3":"0.016-0.026"},{"snr_key":"14","id":"MCSNR J0459-7008","name":"J0459-7008","ra":74.96625,"dec":-70.1305555556,"klass":"SNR","size_maj_arcmin":2.9,"size_min_arcmin":2.9,"d_arcmin":2.9,"r_arcmin":1.45,"d_pc":42.17876,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.211,"xray_rate_err":0.013,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N186D","lx_1e35":1.09,"nh_1e21":0.93,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":true,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":11.0,"age_b17_err_kyr":null,"age_b17_ref":"Jaskot et al. (2011)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"15","id":"MCSNR J0500-6512","name":"J0500-6512","ra":75.2216666667,"dec":-65.1961111111,"klass":"SNR","size_maj_arcmin":6.2,"size_min_arcmin":3.8,"d_arcmin":5.0,"r_arcmin":2.5,"d_pc":72.722,"pa_deg":55.0,"shape":"ellipse","xray_rate_ctss":0.071,"xray_rate_err":0.013,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.48,"eccentricity":0.7901579815,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":"TW","ref_confirm":"Shukla 2024, MSc thesis","alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":"Y21 optical candidate confirmed as MCSNR by Shukla 2024 (XMM-Newton follow-up; thesis sec. 7.2.1); [SII]\/Ha=0.81","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.8,"hr1":0.53,"hr1_err":0.2,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"16","id":"MCSNR J0504-6723","name":"J0504-6723","ra":76.1920833333,"dec":-67.3997222222,"klass":"SNR","size_maj_arcmin":5.5,"size_min_arcmin":5.5,"d_arcmin":5.5,"r_arcmin":2.75,"d_pc":79.9942,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.142,"xray_rate_err":0.015,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"HP99","ref_discovery":"1999A&AS..139..277H (Haberl & Pietsch 1999)","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":true,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.65,"hr1_err":0.1,"hr2":-0.88,"hr2_err":0.08,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":"15.0-35.0","e0_k22_1e51":"0.04-1.35","n0_k22_cm3":"0.006-0.018"},{"snr_key":"17","id":"MCSNR J0505-6753","name":"J0505-6753","ra":76.4245833333,"dec":-67.8791666667,"klass":"SNR","size_maj_arcmin":2.2,"size_min_arcmin":2.2,"d_arcmin":2.2,"r_arcmin":1.1,"d_pc":31.99768,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":18.0,"xray_rate_err":0.1,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"LHG81","ref_discovery":"1981ApJ...248..925L (Long, Helfand & Grabelsky 1981)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L71","lx_1e35":44.59,"nh_1e21":null,"age_kyr":4700.0,"age_err_kyr":null,"alpha_radio":-0.6,"alpha_radio_err":0.02,"s_1ghz_jy":0.0087,"e0_1e51_erg":0.674,"age_l17_yr":6840.0,"n0_cm3":1.28,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":4.36,"age_b17_err_kyr":0.29,"age_b17_ref":"Ghavamian et al. (2003)","sigma_1ghz_b17_1e-20":0.0882,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"18","id":"MCSNR J0505-6802","name":"J0505-6802","ra":76.4779166667,"dec":-68.0305555556,"klass":"SNR","size_maj_arcmin":2.2,"size_min_arcmin":1.8,"d_arcmin":2.0,"r_arcmin":1.0,"d_pc":29.0888,"pa_deg":45.0,"shape":"ellipse","xray_rate_ctss":10.9,"xray_rate_err":0.1,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.2,"eccentricity":0.5749595746,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N23","lx_1e35":26.25,"nh_1e21":0.81,"age_kyr":4600.0,"age_err_kyr":null,"alpha_radio":-0.6,"alpha_radio_err":0.04,"s_1ghz_jy":0.3926,"e0_1e51_erg":1.06,"age_l17_yr":10000.0,"n0_cm3":1.54,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":"CC","sn_type_b17":"CC","age_b17_kyr":4.6,"age_b17_err_kyr":1.2,"age_b17_ref":"Hughes et al. (2006)","sigma_1ghz_b17_1e-20":2.37,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"19","id":"MCSNR J0506-6541","name":"J0506-6541","ra":76.4991666667,"dec":-65.7102777778,"klass":"SNR","size_maj_arcmin":8.6,"size_min_arcmin":8.6,"d_arcmin":8.6,"r_arcmin":4.3,"d_pc":125.08184,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.222,"xray_rate_err":0.018,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"KPS10","ref_discovery":"Klimek, Points & Smith 2010","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L72","lx_1e35":0.53,"nh_1e21":0.39,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.765,"age_l17_yr":56800.0,"n0_cm3":0.0254,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":4.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":115.0,"age_b17_err_kyr":35.0,"age_b17_ref":"Klimek et al. (2010)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.02+0.04-0.02","kt_z26_kev":"0.19+0.01-0.01","tau_z26_1e11":"396+78-361","fx_z26_1e-14":"22.1\u00b10.9","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"20","id":"MCSNR J0506-6815","name":"J0506-6815","ra":76.5295833333,"dec":-68.2619444444,"klass":"SNR","size_maj_arcmin":4.4,"size_min_arcmin":4.0,"d_arcmin":4.2,"r_arcmin":2.1,"d_pc":61.08648,"pa_deg":30.0,"shape":"ellipse","xray_rate_ctss":0.092,"xray_rate_err":0.0125,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0952380952,"eccentricity":0.4165977905,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":0.0,"alpha_radio_err":0.41,"s_1ghz_jy":0.0371,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"B17-Candidates","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.0037,"sii_ha_y21":null,"hr1":-0.03,"hr1_err":0.16,"hr2":-0.04,"hr2_err":0.15,"hr3":-0.85,"hr3_err":0.3,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"21","id":"MCSNR J0506-7009","name":"J0506-7009","ra":76.5658333333,"dec":-70.1555555556,"klass":"SNR","size_maj_arcmin":3.2,"size_min_arcmin":2.4,"d_arcmin":2.8,"r_arcmin":1.4,"d_pc":40.72432,"pa_deg":140.0,"shape":"ellipse","xray_rate_ctss":0.095,"xray_rate_err":0.0095,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.2857142857,"eccentricity":0.6614378278,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.68,"hr1_err":0.11,"hr2":-0.68,"hr2_err":0.08,"hr3":-0.29,"hr3_err":0.29,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"22","id":"MCSNR J0506-7026","name":"J0506-7026","ra":76.7083333333,"dec":-70.4313888889,"klass":"SNR","size_maj_arcmin":5.5,"size_min_arcmin":5.5,"d_arcmin":5.5,"r_arcmin":2.75,"d_pc":79.9942,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.588,"xray_rate_err":0.023,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Lea17","ref_discovery":"Lea17","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"[HP99] 1139","lx_1e35":1.44,"nh_1e21":null,"age_kyr":19000.0,"age_err_kyr":2000.0,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":1.1,"age_l17_yr":15900.0,"n0_cm3":0.0258,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":null,"sn_type_b17":"TN","age_b17_kyr":19.0,"age_b17_err_kyr":2.0,"age_b17_ref":"Maggi et al. (2016)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.03","kt_z26_kev":"0.58+0.04-0.05","tau_z26_1e11":"2.13+0.98-0.41","fx_z26_1e-14":"44.1\u00b11.3","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"23","id":"MCSNR J0507-6847","name":"J0507-6847","ra":76.89,"dec":-68.7908333333,"klass":"SNR","size_maj_arcmin":11.0,"size_min_arcmin":9.2,"d_arcmin":10.1,"r_arcmin":5.05,"d_pc":146.89844,"pa_deg":120.0,"shape":"ellipse","xray_rate_ctss":0.867,"xray_rate_err":0.055,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.1782178218,"eccentricity":0.5481750339,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"B17-Candidates, conf by Ma21","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"24","id":"MCSNR J0508-6830","name":"J0508-6830","ra":77.2083333333,"dec":-68.5138888889,"klass":"SNR","size_maj_arcmin":3.4,"size_min_arcmin":3.4,"d_arcmin":3.4,"r_arcmin":1.7,"d_pc":49.45096,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.062,"xray_rate_err":0.0091,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MHK14","ref_discovery":"2014A&A...561A..76M (Maggi et al. 2014)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"J0508-6830","lx_1e35":0.09,"nh_1e21":null,"age_kyr":20000.0,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.0871,"age_l17_yr":4650.0,"n0_cm3":0.000715,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":20.0,"age_b17_err_kyr":null,"age_b17_ref":"Maggi et al. (2014)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"25","id":"MCSNR J0508-6902","name":"J0508-6902","ra":77.1541666667,"dec":-69.0483333333,"klass":"SNR","size_maj_arcmin":3.6,"size_min_arcmin":3.6,"d_arcmin":3.6,"r_arcmin":1.8,"d_pc":52.35984,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.194,"xray_rate_err":0.013,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"BKM14","ref_discovery":"BKM14","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"[HP99] 791","lx_1e35":0.37,"nh_1e21":null,"age_kyr":22500.0,"age_err_kyr":2500.0,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.582,"age_l17_yr":26600.0,"n0_cm3":0.0183,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":22.5,"age_b17_err_kyr":2.5,"age_b17_ref":"Bozzetto et al. (2014b)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.03","kt_z26_kev":"0.68+0.05-0.07","tau_z26_1e11":"298+178-263","fx_z26_1e-14":"14.2\u00b10.6","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"26","id":"MCSNR J0509-6731","name":"J0509-6731","ra":77.3775,"dec":-67.5222222222,"klass":"SNR","size_maj_arcmin":1.5,"size_min_arcmin":1.5,"d_arcmin":1.5,"r_arcmin":0.75,"d_pc":21.8166,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":5.61,"xray_rate_err":0.05,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"LHG81","ref_discovery":"1981ApJ...248..925L (Long, Helfand & Grabelsky 1981)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"B0509-67.5","lx_1e35":16.51,"nh_1e21":1.42,"age_kyr":400.0,"age_err_kyr":120.0,"alpha_radio":-0.73,"alpha_radio_err":0.02,"s_1ghz_jy":0.0974,"e0_1e51_erg":0.037,"age_l17_yr":3960.0,"n0_cm3":1.87,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":0.31,"age_b17_err_kyr":0.12,"age_b17_ref":"Hovey et al. (2015)","sigma_1ghz_b17_1e-20":5.72,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"27","id":"MCSNR J0509-6844","name":"J0509-6844","ra":77.2458333333,"dec":-68.7263888889,"klass":"SNR","size_maj_arcmin":2.4,"size_min_arcmin":2.4,"d_arcmin":2.4,"r_arcmin":1.2,"d_pc":34.90656,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":20.6,"xray_rate_err":0.1,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N103B","lx_1e35":51.7,"nh_1e21":1.16,"age_kyr":860.0,"age_err_kyr":null,"alpha_radio":-0.65,"alpha_radio_err":0.03,"s_1ghz_jy":0.578,"e0_1e51_erg":0.116,"age_l17_yr":3220.0,"n0_cm3":5.52,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":2.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":0.86,"age_b17_err_kyr":null,"age_b17_ref":"Hughes et al. (1995)","sigma_1ghz_b17_1e-20":39.7,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"28","id":"MCSNR J0510-6708","name":"J0510-6708","ra":77.5475,"dec":-67.1344444444,"klass":"SNR","size_maj_arcmin":2.0,"size_min_arcmin":2.0,"d_arcmin":2.0,"r_arcmin":1.0,"d_pc":29.0888,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.021,"xray_rate_err":0.0088,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.5,"alpha_radio_err":0.0,"s_1ghz_jy":0.0029,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":true,"in_b23":false,"thesis_note":"B17-Candidates-New","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.011,"sii_ha_y21":null,"hr1":0.23,"hr1_err":0.43,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":"12.0-22.0","e0_k22_1e51":"0.01-1.82","n0_k22_cm3":"0.023-0.23"},{"snr_key":"29","id":"MCSNR J0511-6759","name":"J0511-6759","ra":77.8225,"dec":-67.9861111111,"klass":"SNR","size_maj_arcmin":4.1,"size_min_arcmin":4.1,"d_arcmin":4.1,"r_arcmin":2.05,"d_pc":59.63204,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.119,"xray_rate_err":0.011,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MHK14","ref_discovery":"2014A&A...561A..76M (Maggi et al. 2014)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":0.16,"nh_1e21":null,"age_kyr":20000.0,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.0535,"age_l17_yr":8120.0,"n0_cm3":0.0108,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":20.0,"age_b17_err_kyr":null,"age_b17_ref":"Maggi et al. (2014)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"30","id":"MCSNR J0512-6707","name":"J0512-6707","ra":78.1125,"dec":-67.1216666667,"klass":"SNR","size_maj_arcmin":2.6,"size_min_arcmin":2.6,"d_arcmin":2.6,"r_arcmin":1.3,"d_pc":37.81544,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.058,"xray_rate_err":0.0066,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"KSB15b","ref_discovery":"KSB15b","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"[HP99] 483","lx_1e35":0.09,"nh_1e21":0.28,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.49,"alpha_radio_err":0.01,"s_1ghz_jy":0.1046,"e0_1e51_erg":0.0407,"age_l17_yr":15900.0,"n0_cm3":0.0392,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"TN","age_b17_kyr":3.15,"age_b17_err_kyr":1.25,"age_b17_ref":"Reid et al. (2015)","sigma_1ghz_b17_1e-20":2.29,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"31","id":"MCSNR J0512-6716","name":"J0512-6716","ra":78.1029166667,"dec":-67.2819444444,"klass":"SNR","size_maj_arcmin":7.8,"size_min_arcmin":7.4,"d_arcmin":7.6,"r_arcmin":3.8,"d_pc":110.53744,"pa_deg":45.0,"shape":"ellipse","xray_rate_ctss":0.14,"xray_rate_err":0.019,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0526315789,"eccentricity":0.316123795,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":"MCSNR J0512-6717","lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":true,"in_b23":false,"thesis_note":"B17-Candidates-New","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.41,"hr1_err":0.1,"hr2":-0.8,"hr2_err":0.3,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":"28.0-36.0","e0_k22_1e51":"0.21-1.75","n0_k22_cm3":"0.034-0.069"},{"snr_key":"32","id":"MCSNR J0513-6724","name":"J0513-6724","ra":78.4291666667,"dec":-67.4027777778,"klass":"SNR","size_maj_arcmin":2.6,"size_min_arcmin":2.0,"d_arcmin":2.3,"r_arcmin":1.15,"d_pc":33.45212,"pa_deg":0.0,"shape":"ellipse","xray_rate_ctss":0.05,"xray_rate_err":0.0059,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.2608695652,"eccentricity":0.6389710664,"ref_discovery_code":"Ma19","ref_discovery":"2019MNRAS.490.5494M","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.61,"alpha_radio_err":0.41,"s_1ghz_jy":0.0279,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"B17-Candidates, conf by Ma19","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.0673,"sii_ha_y21":null,"hr1":-0.05,"hr1_err":0.13,"hr2":-0.23,"hr2_err":0.14,"hr3":-0.67,"hr3_err":0.29,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"33","id":"MCSNR J0513-6912","name":"J0513-6912","ra":78.2983333333,"dec":-69.2055555556,"klass":"SNR","size_maj_arcmin":4.0,"size_min_arcmin":3.2,"d_arcmin":3.6,"r_arcmin":1.8,"d_pc":52.35984,"pa_deg":55.0,"shape":"ellipse","xray_rate_ctss":0.236,"xray_rate_err":0.0154,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.2222222222,"eccentricity":0.6,"ref_discovery_code":"MFT85","ref_discovery":"Mathewson et al. 1985","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L109","lx_1e35":0.51,"nh_1e21":0.56,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.52,"alpha_radio_err":0.09,"s_1ghz_jy":0.2423,"e0_1e51_erg":0.654,"age_l17_yr":21100.0,"n0_cm3":0.0426,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":3.5,"age_b17_err_kyr":1.5,"age_b17_ref":"Desai et al. (2010)","sigma_1ghz_b17_1e-20":0.268,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.07","kt_z26_kev":"0.70+0.07-0.06","tau_z26_1e11":"1.85+471-3.59","fx_z26_1e-14":"16.1\u00b10.7","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"34","id":"MCSNR J0514-6840","name":"J0514-6840","ra":78.55375,"dec":-68.6708333333,"klass":"SNR","size_maj_arcmin":4.8,"size_min_arcmin":4.8,"d_arcmin":4.8,"r_arcmin":2.4,"d_pc":69.81312,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.16,"xray_rate_err":0.014,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MHK14","ref_discovery":"2014A&A...561A..76M (Maggi et al. 2014)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"HP 700","lx_1e35":0.4,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.246,"age_l17_yr":23800.0,"n0_cm3":0.0307,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"35","id":"MCSNR J0517-6759","name":"J0517-6759","ra":79.29875,"dec":-67.9805555556,"klass":"SNR","size_maj_arcmin":5.3,"size_min_arcmin":5.3,"d_arcmin":5.3,"r_arcmin":2.65,"d_pc":77.08532,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.116,"xray_rate_err":0.014,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MHK14","ref_discovery":"2014A&A...561A..76M (Maggi et al. 2014)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"HP 607","lx_1e35":0.24,"nh_1e21":1.44,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.662,"age_l17_yr":60100.0,"n0_cm3":0.0356,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"36","id":"MCSNR J0518-6939","name":"J0518-6939","ra":79.67375,"dec":-69.6555555556,"klass":"SNR","size_maj_arcmin":3.4,"size_min_arcmin":3.4,"d_arcmin":3.4,"r_arcmin":1.7,"d_pc":49.45096,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.442,"xray_rate_err":0.018,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N120","lx_1e35":0.88,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.61,"alpha_radio_err":0.03,"s_1ghz_jy":0.4504,"e0_1e51_erg":0.37,"age_l17_yr":13300.0,"n0_cm3":0.0962,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":7.3,"age_b17_err_kyr":null,"age_b17_ref":"Rosado et al. (1993)","sigma_1ghz_b17_1e-20":2.79,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.03","kt_z26_kev":"1.04+0.29-0.29","tau_z26_1e11":"0.14+0.07-0.03","fx_z26_1e-14":"33.8\u00b11.0","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"37","id":"MCSNR J0519-6902","name":"J0519-6902","ra":79.88875,"dec":-69.0391666667,"klass":"SNR","size_maj_arcmin":2.6,"size_min_arcmin":2.6,"d_arcmin":2.6,"r_arcmin":1.3,"d_pc":37.81544,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":15.1,"xray_rate_err":0.1,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"LHG81","ref_discovery":"1981ApJ...248..925L (Long, Helfand & Grabelsky 1981)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"B0519-690","lx_1e35":34.94,"nh_1e21":0.63,"age_kyr":600.0,"age_err_kyr":200.0,"alpha_radio":-0.64,"alpha_radio_err":0.02,"s_1ghz_jy":0.1316,"e0_1e51_erg":0.183,"age_l17_yr":2680.0,"n0_cm3":3.51,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":0.6,"age_b17_err_kyr":0.2,"age_b17_ref":"Borkowski et al. (2006b)","sigma_1ghz_b17_1e-20":6.09,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"38","id":"MCSNR J0519-6926","name":"J0519-6926","ra":79.9333333333,"dec":-69.4355555556,"klass":"SNR","size_maj_arcmin":4.6,"size_min_arcmin":4.6,"d_arcmin":4.6,"r_arcmin":2.3,"d_pc":66.90424,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":1.28,"xray_rate_err":0.03,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MFD83","ref_discovery":"MFD83","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"B0520-694","lx_1e35":2.69,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.53,"alpha_radio_err":0.03,"s_1ghz_jy":0.1606,"e0_1e51_erg":0.744,"age_l17_yr":18000.0,"n0_cm3":0.114,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.565,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.01","kt_z26_kev":"1.73+0.36-0.49","tau_z26_1e11":"0.08+0.02-0.01","fx_z26_1e-14":"100.5\u00b12.2","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"39","id":"MCSNR J0521-6543","name":"J0521-6543","ra":80.4125,"dec":-65.7186111111,"klass":"SNR","size_maj_arcmin":6.6,"size_min_arcmin":6.6,"d_arcmin":6.6,"r_arcmin":3.3,"d_pc":95.99304,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.058,"xray_rate_err":0.0109,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"BGS06","ref_discovery":"2006ApJS..165..480B (Blair et al. 2006, UV)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L142","lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":true,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"40","id":"MCSNR J0522-6543","name":"J0522-6543","ra":80.7229166667,"dec":-65.7191666667,"klass":"SNR","size_maj_arcmin":5.8,"size_min_arcmin":5.2,"d_arcmin":5.5,"r_arcmin":2.75,"d_pc":79.9942,"pa_deg":26.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.1090909091,"eccentricity":0.4429390544,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"41","id":"MCSNR J0522-6740","name":"J0522-6740","ra":80.6404166667,"dec":-67.6844444444,"klass":"SNR","size_maj_arcmin":3.2,"size_min_arcmin":3.0,"d_arcmin":3.1,"r_arcmin":1.55,"d_pc":45.08764,"pa_deg":90.0,"shape":"ellipse","xray_rate_ctss":0.053,"xray_rate_err":0.0119,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.064516129,"eccentricity":0.3479852727,"ref_discovery_code":"Y20","ref_discovery":"Yew 2020, PhD thesis","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":1.0,"hr1":0.38,"hr1_err":0.21,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"42","id":"MCSNR J0523-6753","name":"J0523-6753","ra":80.7729166667,"dec":-67.8888888889,"klass":"SNR","size_maj_arcmin":4.8,"size_min_arcmin":4.8,"d_arcmin":4.8,"r_arcmin":2.4,"d_pc":69.81312,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.414,"xray_rate_err":0.019,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"CMG93","ref_discovery":"CMG93","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"N44","lx_1e35":0.9,"nh_1e21":0.21,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.504,"age_l17_yr":12600.0,"n0_cm3":0.0471,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":18.0,"age_b17_err_kyr":null,"age_b17_ref":"Williams et al. (2006)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.04+0.08-0.03","kt_z26_kev":"1.23+0.27-0.16","tau_z26_1e11":"0.66+0.17-0.16","fx_z26_1e-14":"29.5\u00b11.1","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"43","id":"MCSNR J0524-6624","name":"J0524-6624","ra":81.0866666667,"dec":-66.4077777778,"klass":"SNR","size_maj_arcmin":4.3,"size_min_arcmin":4.3,"d_arcmin":4.3,"r_arcmin":2.15,"d_pc":62.54092,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.038,"xray_rate_err":0.006,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MFT85","ref_discovery":"Mathewson et al. 1985","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L175a","lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.41,"alpha_radio_err":0.02,"s_1ghz_jy":0.0725,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":true,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.187,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"44","id":"MCSNR J0525-6559","name":"J0525-6559","ra":81.3504166667,"dec":-65.9905555556,"klass":"SNR","size_maj_arcmin":3.7,"size_min_arcmin":3.7,"d_arcmin":3.7,"r_arcmin":1.85,"d_pc":53.81428,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":16.1,"xray_rate_err":0.1,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N49B","lx_1e35":38.03,"nh_1e21":0.95,"age_kyr":10000.0,"age_err_kyr":null,"alpha_radio":-0.56,"alpha_radio_err":0.03,"s_1ghz_jy":0.6344,"e0_1e51_erg":2.82,"age_l17_yr":11800.0,"n0_cm3":0.51,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":"CC","sn_type_b17":"CC","age_b17_kyr":10.0,"age_b17_err_kyr":null,"age_b17_ref":"Park et al. (2003)","sigma_1ghz_b17_1e-20":1.43,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"45","id":"MCSNR J0525-6938","name":"J0525-6938","ra":81.2620833333,"dec":-69.6452777778,"klass":"SNR","size_maj_arcmin":3.7,"size_min_arcmin":3.7,"d_arcmin":3.7,"r_arcmin":1.85,"d_pc":53.81428,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":130.0,"xray_rate_err":1.0,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"WM66","ref_discovery":"Westerlund & Mathewson 1966","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N132D","lx_1e35":315.04,"nh_1e21":0.45,"age_kyr":3150.0,"age_err_kyr":null,"alpha_radio":-0.65,"alpha_radio_err":0.04,"s_1ghz_jy":5.2642,"e0_1e51_erg":4.81,"age_l17_yr":8130.0,"n0_cm3":2.27,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":"CC","sn_type_b17":"CC","age_b17_kyr":3.15,"age_b17_err_kyr":0.2,"age_b17_ref":"Borkowski et al. (2007)","sigma_1ghz_b17_1e-20":27.9,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"46","id":"MCSNR J0526-6605","name":"J0526-6605","ra":81.4975,"dec":-66.0844444444,"klass":"SNR","size_maj_arcmin":2.7,"size_min_arcmin":2.7,"d_arcmin":2.7,"r_arcmin":1.35,"d_pc":39.26988,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":25.0,"xray_rate_err":0.1,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"WM66","ref_discovery":"Westerlund & Mathewson 1966","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N49","lx_1e35":64.37,"nh_1e21":0.64,"age_kyr":4800.0,"age_err_kyr":null,"alpha_radio":-0.59,"alpha_radio_err":0.03,"s_1ghz_jy":1.6618,"e0_1e51_erg":1.16,"age_l17_yr":7650.0,"n0_cm3":1.93,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":"CC","sn_type_b17":"CCq","age_b17_kyr":4.8,"age_b17_err_kyr":null,"age_b17_ref":"Park et al. (2012)","sigma_1ghz_b17_1e-20":16.0,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"47","id":"MCSNR J0527-6550","name":"J0527-6550","ra":81.975,"dec":-65.8272222222,"klass":"SNR","size_maj_arcmin":5.2,"size_min_arcmin":5.2,"d_arcmin":5.2,"r_arcmin":2.6,"d_pc":75.63088,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.475,"xray_rate_err":0.013,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"LHG81","ref_discovery":"1981ApJ...248..925L (Long, Helfand & Grabelsky 1981)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L204","lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.51,"alpha_radio_err":0.04,"s_1ghz_jy":0.1365,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":true,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.0803,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.01","kt_z26_kev":"0.54+0.18-0.05","tau_z26_1e11":"0.33+0.07-0.14","fx_z26_1e-14":"36.6\u00b10.6","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"48","id":"MCSNR J0527-6714","name":"J0527-6714","ra":82.0329166667,"dec":-67.2286111111,"klass":"SNR","size_maj_arcmin":6.9,"size_min_arcmin":6.9,"d_arcmin":6.9,"r_arcmin":3.45,"d_pc":100.35636,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.037,"xray_rate_err":0.0153,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"TM84","ref_discovery":"TM84","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"B0528-6716","lx_1e35":0.25,"nh_1e21":2.28,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.28,"alpha_radio_err":0.09,"s_1ghz_jy":0.1113,"e0_1e51_erg":0.31,"age_l17_yr":37800.0,"n0_cm3":0.0362,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.129,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"49","id":"MCSNR J0527-6912","name":"J0527-6912","ra":81.9154166667,"dec":-69.2055555556,"klass":"SNR","size_maj_arcmin":3.9,"size_min_arcmin":3.9,"d_arcmin":3.9,"r_arcmin":1.95,"d_pc":56.72316,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.447,"xray_rate_err":0.016,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MFD84","ref_discovery":"MFD84","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"B0528-692","lx_1e35":1.99,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.195,"age_l17_yr":27900.0,"n0_cm3":0.0575,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":4.5,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"50","id":"MCSNR J0527-7104","name":"J0527-7104","ra":82.005,"dec":-71.0730555556,"klass":"SNR","size_maj_arcmin":5.6,"size_min_arcmin":3.2,"d_arcmin":4.4,"r_arcmin":2.2,"d_pc":63.99536,"pa_deg":65.0,"shape":"ellipse","xray_rate_ctss":0.127,"xray_rate_err":0.015,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.5454545455,"eccentricity":0.8206518066,"ref_discovery_code":"KSP13","ref_discovery":"KSP13","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"[HP99] 1234","lx_1e35":0.21,"nh_1e21":0.66,"age_kyr":25000.0,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.568,"age_l17_yr":33400.0,"n0_cm3":0.0108,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.5,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":25.0,"age_b17_err_kyr":null,"age_b17_ref":"Kavanagh et al. (2013)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"51","id":"MCSNR J0527-7134","name":"J0527-7134","ra":81.9579166667,"dec":-71.5688888889,"klass":"SNR","size_maj_arcmin":3.8,"size_min_arcmin":3.6,"d_arcmin":3.7,"r_arcmin":1.85,"d_pc":53.81428,"pa_deg":45.0,"shape":"ellipse","xray_rate_ctss":0.069,"xray_rate_err":0.0092,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0540540541,"eccentricity":0.3201453963,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.52,"alpha_radio_err":0.41,"s_1ghz_jy":0.0284,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":true,"in_b23":false,"thesis_note":"B17-Candidates-New","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.0589,"sii_ha_y21":null,"hr1":-0.27,"hr1_err":0.11,"hr2":-0.74,"hr2_err":0.25,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":"7.0-21.0","e0_k22_1e51":"0.02-1.32","n0_k22_cm3":"0.012-0.045"},{"snr_key":"52","id":"MCSNR J0528-6727","name":"J0528-6727","ra":82.0208333333,"dec":-67.4555555556,"klass":"SNR","size_maj_arcmin":5.7,"size_min_arcmin":5.7,"d_arcmin":5.7,"r_arcmin":2.85,"d_pc":82.90308,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.18,"xray_rate_err":0.015,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MHB12","ref_discovery":"MHB12","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L205","lx_1e35":0.58,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.569,"age_l17_yr":40800.0,"n0_cm3":0.0313,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":33.5,"age_b17_err_kyr":3.5,"age_b17_ref":"Maggi et al. (2012)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"53","id":"MCSNR J0529-6653","name":"J0529-6653","ra":82.455,"dec":-66.8927777778,"klass":"SNR","size_maj_arcmin":3.5,"size_min_arcmin":3.5,"d_arcmin":3.5,"r_arcmin":1.75,"d_pc":50.9054,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.395,"xray_rate_err":0.011,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"BFC12a","ref_discovery":"BFC12a","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L214","lx_1e35":1.04,"nh_1e21":0.96,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.68,"alpha_radio_err":0.03,"s_1ghz_jy":0.0863,"e0_1e51_erg":1.67,"age_l17_yr":5040.0,"n0_cm3":0.0731,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":4.5,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.267,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.015+0.04-0.002","kt_z26_kev":"0.21+0.02-0.01","tau_z26_1e11":"<282","fx_z26_1e-14":"1.2\u00b10.5","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"54","id":"MCSNR J0529-7004","name":"J0529-7004","ra":82.2975,"dec":-70.0777777778,"klass":"SNR","size_maj_arcmin":1.6,"size_min_arcmin":1.6,"d_arcmin":1.6,"r_arcmin":0.8,"d_pc":23.27104,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.15,"xray_rate_err":0.026,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Y20","ref_discovery":"Yew 2020, PhD thesis","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":1.0,"hr1":0.0,"hr1_err":0.17,"hr2":-0.76,"hr2_err":0.21,"hr3":-0.23,"hr3_err":0.87,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"55","id":"MCSNR J0530-7008","name":"J0530-7008","ra":82.6625,"dec":-70.125,"klass":"SNR","size_maj_arcmin":5.8,"size_min_arcmin":5.8,"d_arcmin":5.8,"r_arcmin":2.9,"d_pc":84.35752,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.348,"xray_rate_err":0.03,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"DFB12","ref_discovery":"DFB12","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L218","lx_1e35":0.72,"nh_1e21":0.29,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.27,"alpha_radio_err":0.01,"s_1ghz_jy":0.0718,"e0_1e51_erg":0.4,"age_l17_yr":45200.0,"n0_cm3":0.0278,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"TNq","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.101,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.1","kt_z26_kev":"0.30+0.02-0.03","tau_z26_1e11":"378+95-346","fx_z26_1e-14":"26.1\u00b11.2","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"56","id":"MCSNR J0531-7100","name":"J0531-7100","ra":82.9833333333,"dec":-71.0052777778,"klass":"SNR","size_maj_arcmin":4.0,"size_min_arcmin":4.0,"d_arcmin":4.0,"r_arcmin":2.0,"d_pc":58.1776,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":1.14,"xray_rate_err":0.02,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N206","lx_1e35":2.55,"nh_1e21":0.2,"age_kyr":25000.0,"age_err_kyr":null,"alpha_radio":-0.66,"alpha_radio_err":0.03,"s_1ghz_jy":0.4086,"e0_1e51_erg":0.496,"age_l17_yr":13100.0,"n0_cm3":0.0868,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":4.5,"sn_type_m16":null,"sn_type_b17":"CCpwn","age_b17_kyr":25.0,"age_b17_err_kyr":2.0,"age_b17_ref":"Williams et al. (2005)","sigma_1ghz_b17_1e-20":0.685,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.03+0.03-0.02","kt_z26_kev":"1.08+0.29-0.20","tau_z26_1e11":"0.17+0.06-0.04","fx_z26_1e-14":"88.1\u00b11.6","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"57","id":"MCSNR J0532-6732","name":"J0532-6732","ra":83.0583333333,"dec":-67.5361111111,"klass":"SNR","size_maj_arcmin":5.3,"size_min_arcmin":5.3,"d_arcmin":5.3,"r_arcmin":2.65,"d_pc":77.08532,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":1.17,"xray_rate_err":0.02,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MFT85","ref_discovery":"Mathewson et al. 1985","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"B0532-675","lx_1e35":2.48,"nh_1e21":0.54,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.63,"alpha_radio_err":0.04,"s_1ghz_jy":0.2152,"e0_1e51_erg":1.68,"age_l17_yr":22100.0,"n0_cm3":0.0442,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.36,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.03+0.02-0.02","kt_z26_kev":"1.17+0.28-0.21","tau_z26_1e11":"0.10+0.03-0.02","fx_z26_1e-14":"91.7\u00b11.3","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"58","id":"MCSNR J0533-7202","name":"J0533-7202","ra":83.4720833333,"dec":-72.0491666667,"klass":"SNR","size_maj_arcmin":4.4,"size_min_arcmin":4.4,"d_arcmin":4.4,"r_arcmin":2.2,"d_pc":63.99536,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.259,"xray_rate_err":0.014,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"BFC13","ref_discovery":"BFC13","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"1RXSJ053353.6-7204","lx_1e35":0.57,"nh_1e21":0.26,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.47,"alpha_radio_err":0.06,"s_1ghz_jy":0.1333,"e0_1e51_erg":0.31,"age_l17_yr":21900.0,"n0_cm3":0.0507,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":2.0,"sn_type_m16":null,"sn_type_b17":"TNq","age_b17_kyr":23.0,"age_b17_err_kyr":5.0,"age_b17_ref":"Williams et al. (2005)","sigma_1ghz_b17_1e-20":0.225,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"59","id":"MCSNR J0534-6955","name":"J0534-6955","ra":83.5016666667,"dec":-69.9175,"klass":"SNR","size_maj_arcmin":3.3,"size_min_arcmin":3.3,"d_arcmin":3.3,"r_arcmin":1.65,"d_pc":47.99652,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":3.36,"xray_rate_err":0.04,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"LHG81","ref_discovery":"1981ApJ...248..925L (Long, Helfand & Grabelsky 1981)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"B0534-699","lx_1e35":6.33,"nh_1e21":0.92,"age_kyr":10000.0,"age_err_kyr":null,"alpha_radio":-0.51,"alpha_radio_err":0.01,"s_1ghz_jy":0.0889,"e0_1e51_erg":0.76,"age_l17_yr":13400.0,"n0_cm3":0.506,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":10.1,"age_b17_err_kyr":null,"age_b17_ref":"Hendrick et al. (2003)","sigma_1ghz_b17_1e-20":0.382,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.20+0.02-0.03","kt_z26_kev":"0.69+0.08-0.03","tau_z26_1e11":"0.21+0.02-0.03","fx_z26_1e-14":"238.4\u00b11.7","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"60","id":"MCSNR J0534-7033","name":"J0534-7033","ra":83.5620833333,"dec":-70.5627777778,"klass":"SNR","size_maj_arcmin":4.1,"size_min_arcmin":4.1,"d_arcmin":4.1,"r_arcmin":2.05,"d_pc":59.63204,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.712,"xray_rate_err":0.02,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"LHG81","ref_discovery":"1981ApJ...248..925L (Long, Helfand & Grabelsky 1981)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L238","lx_1e35":1.55,"nh_1e21":null,"age_kyr":13500.0,"age_err_kyr":null,"alpha_radio":-0.44,"alpha_radio_err":0.09,"s_1ghz_jy":0.0796,"e0_1e51_erg":0.833,"age_l17_yr":11000.0,"n0_cm3":0.0515,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":12.5,"age_b17_err_kyr":2.5,"age_b17_ref":"Borkowski et al. (2006a)","sigma_1ghz_b17_1e-20":0.123,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.01","kt_z26_kev":"0.86+0.02-0.03","tau_z26_1e11":"276+202-234","fx_z26_1e-14":"53.6\u00b11.5","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"61","id":"MCSNR J0535-6602","name":"J0535-6602","ra":83.9370833333,"dec":-66.0358333333,"klass":"SNR","size_maj_arcmin":3.1,"size_min_arcmin":3.1,"d_arcmin":3.1,"r_arcmin":1.55,"d_pc":45.08764,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":83.3,"xray_rate_err":0.1,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"WM66","ref_discovery":"Westerlund & Mathewson 1966","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N63A","lx_1e35":185.68,"nh_1e21":0.46,"age_kyr":3500.0,"age_err_kyr":1500.0,"alpha_radio":-0.74,"alpha_radio_err":0.02,"s_1ghz_jy":1.8641,"e0_1e51_erg":2.04,"age_l17_yr":6610.0,"n0_cm3":3.04,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":"CC","sn_type_b17":"CCq","age_b17_kyr":3.5,"age_b17_err_kyr":1.5,"age_b17_ref":"Warren et al. (2003)","sigma_1ghz_b17_1e-20":18.7,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"62","id":"MCSNR J0535-6916","name":"J0535-6916","ra":83.8654166667,"dec":-69.2708333333,"klass":"SNR","size_maj_arcmin":1.4,"size_min_arcmin":1.4,"d_arcmin":1.4,"r_arcmin":0.7,"d_pc":20.36216,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":6.61,"xray_rate_err":0.05,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"HISTORICAL","ref_discovery":"HISTORICAL","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"SNR1987A","lx_1e35":27.39,"nh_1e21":1.16,"age_kyr":28.0,"age_err_kyr":null,"alpha_radio":-0.68,"alpha_radio_err":0.03,"s_1ghz_jy":0.82,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":true,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":4.0,"sn_type_m16":"CC","sn_type_b17":"CC","age_b17_kyr":0.03,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":13700.0,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"63","id":"MCSNR J0535-6918","name":"J0535-6918","ra":83.9466666667,"dec":-69.3038888889,"klass":"SNR","size_maj_arcmin":2.2,"size_min_arcmin":2.2,"d_arcmin":2.2,"r_arcmin":1.1,"d_pc":31.99768,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.129,"xray_rate_err":0.017,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"CDS95","ref_discovery":"CDS95","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"Honeycomb","lx_1e35":0.4,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.71,"alpha_radio_err":0.05,"s_1ghz_jy":0.1483,"e0_1e51_erg":0.11,"age_l17_yr":9390.0,"n0_cm3":0.248,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.5,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":1.52,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"64","id":"MCSNR J0536-6735","name":"J0536-6735","ra":83.9841666667,"dec":-67.5686111111,"klass":"SNR","size_maj_arcmin":6.8,"size_min_arcmin":3.6,"d_arcmin":5.2,"r_arcmin":2.6,"d_pc":75.63088,"pa_deg":66.0,"shape":"ellipse","xray_rate_ctss":1.37,"xray_rate_err":0.02,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.6153846154,"eccentricity":0.848365006,"ref_discovery_code":"MFT85","ref_discovery":"Mathewson et al. 1985","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L241","lx_1e35":3.84,"nh_1e21":0.66,"age_kyr":10000.0,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.797,"age_l17_yr":14900.0,"n0_cm3":0.0728,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":"CC","sn_type_b17":"CCpwn","age_b17_kyr":60.0,"age_b17_err_kyr":10.0,"age_b17_ref":"Seward et al. (2012); Park et al. (2003); Williams et al. (2004); Williams et al. (2004); Williams et al. (2004)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"65","id":"MCSNR J0536-6913","name":"J0536-6913","ra":84.0641666667,"dec":-69.2186111111,"klass":"SNR","size_maj_arcmin":1.8,"size_min_arcmin":1.8,"d_arcmin":1.8,"r_arcmin":0.9,"d_pc":26.17992,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.122,"xray_rate_err":0.01,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"KSB15a","ref_discovery":"KSB15a","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"B0536-6914","lx_1e35":0.22,"nh_1e21":1.11,"age_kyr":3550.0,"age_err_kyr":1350.0,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.0435,"age_l17_yr":4200.0,"n0_cm3":0.098,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":4.5,"sn_type_m16":"CC","sn_type_b17":"CC","age_b17_kyr":3.55,"age_b17_err_kyr":1.35,"age_b17_ref":"Kavanagh et al. (2015a)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"66","id":"MCSNR J0536-7039","name":"J0536-7039","ra":84.0054166667,"dec":-70.6405555556,"klass":"SNR","size_maj_arcmin":4.5,"size_min_arcmin":4.5,"d_arcmin":4.5,"r_arcmin":2.25,"d_pc":65.4498,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.7,"xray_rate_err":0.019,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"LHG81","ref_discovery":"1981ApJ...248..925L (Long, Helfand & Grabelsky 1981)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L249","lx_1e35":1.43,"nh_1e21":null,"age_kyr":15000.0,"age_err_kyr":null,"alpha_radio":-0.52,"alpha_radio_err":0.06,"s_1ghz_jy":0.0699,"e0_1e51_erg":0.168,"age_l17_yr":20900.0,"n0_cm3":0.0434,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TN","age_b17_kyr":12.5,"age_b17_err_kyr":2.5,"age_b17_ref":"Borkowski et al. (2006a)","sigma_1ghz_b17_1e-20":0.16,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.01","kt_z26_kev":"0.67+0.04-0.05","tau_z26_1e11":"1.29+0.28-0.20","fx_z26_1e-14":"50.7\u00b11.1","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"67","id":"MCSNR J0537-6628","name":"J0537-6628","ra":84.37875,"dec":-66.4644444444,"klass":"SNR","size_maj_arcmin":4.4,"size_min_arcmin":3.0,"d_arcmin":3.7,"r_arcmin":1.85,"d_pc":53.81428,"pa_deg":315.0,"shape":"ellipse","xray_rate_ctss":0.131,"xray_rate_err":0.006,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.3783783784,"eccentricity":0.7315216791,"ref_discovery_code":"KPS10","ref_discovery":"Klimek, Points & Smith 2010","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L256","lx_1e35":0.32,"nh_1e21":0.25,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.47,"alpha_radio_err":0.06,"s_1ghz_jy":0.0729,"e0_1e51_erg":0.415,"age_l17_yr":20100.0,"n0_cm3":0.0317,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":2.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":50.0,"age_b17_err_kyr":null,"age_b17_ref":"Klimek et al. (2010)","sigma_1ghz_b17_1e-20":0.114,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"68","id":"MCSNR J0537-6910","name":"J0537-6910","ra":84.4475,"dec":-69.1713888889,"klass":"SNR","size_maj_arcmin":2.6,"size_min_arcmin":2.6,"d_arcmin":2.6,"r_arcmin":1.3,"d_pc":37.81544,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":2.86,"xray_rate_err":0.03,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"N157B","lx_1e35":15.0,"nh_1e21":1.73,"age_kyr":5000.0,"age_err_kyr":null,"alpha_radio":-0.38,"alpha_radio_err":0.03,"s_1ghz_jy":2.8817,"e0_1e51_erg":10.8,"age_l17_yr":1310.0,"n0_cm3":0.0776,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":null,"sn_type_b17":"CCpwn","age_b17_kyr":5.0,"age_b17_err_kyr":null,"age_b17_ref":"Seward et al. (2010)","sigma_1ghz_b17_1e-20":9.9,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"1.57+0.03-0.03","kt_z26_kev":"2.18+0.17-0.13","tau_z26_1e11":"0.04+0.01-0.01","fx_z26_1e-14":"446\u00b18.0","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"69","id":"MCSNR J0540-6920","name":"J0540-6920","ra":85.0429166667,"dec":-69.3330555556,"klass":"SNR","size_maj_arcmin":1.4,"size_min_arcmin":1.4,"d_arcmin":1.4,"r_arcmin":0.7,"d_pc":20.36216,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":10.8,"xray_rate_err":0.1,"xray_rate_is_upper_limit":false,"sn_type":"CC?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"B0540-693","lx_1e35":87.35,"nh_1e21":1.58,"age_kyr":1600.0,"age_err_kyr":null,"alpha_radio":-0.63,"alpha_radio_err":0.03,"s_1ghz_jy":1.0272,"e0_1e51_erg":0.235,"age_l17_yr":6040.0,"n0_cm3":0.601,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":5.0,"sn_type_m16":null,"sn_type_b17":"CCpwn","age_b17_kyr":1.1,"age_b17_err_kyr":0.34,"age_b17_ref":"Crawford et al. (2014)","sigma_1ghz_b17_1e-20":14.3,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"70","id":"MCSNR J0540-6944","name":"J0540-6944","ra":85.0254166667,"dec":-69.7333333333,"klass":"SNR","size_maj_arcmin":1.4,"size_min_arcmin":1.4,"d_arcmin":1.4,"r_arcmin":0.7,"d_pc":20.36216,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.946,"xray_rate_err":0.018,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"CKS97","ref_discovery":"CKS97","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"N159","lx_1e35":0.43,"nh_1e21":1.92,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.649,"age_l17_yr":19000.0,"n0_cm3":0.449,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"CC","age_b17_kyr":18.0,"age_b17_err_kyr":null,"age_b17_ref":"Seward et al. (2010)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"71","id":"MCSNR J0541-6659","name":"J0541-6659","ra":85.45625,"dec":-66.9788888889,"klass":"SNR","size_maj_arcmin":5.6,"size_min_arcmin":5.6,"d_arcmin":5.6,"r_arcmin":2.8,"d_pc":81.44864,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.345,"xray_rate_err":0.01,"xray_rate_is_upper_limit":false,"sn_type":"Ia","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"GSH12","ref_discovery":"GSH12","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"[HP99] 456","lx_1e35":0.77,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":0.5,"age_l17_yr":26500.0,"n0_cm3":0.0166,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":23.0,"age_b17_err_kyr":null,"age_b17_ref":"Grondin et al. (2012)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.5,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"72","id":"MCSNR J0542-7104","name":"J0542-7104","ra":85.675,"dec":-71.0747222222,"klass":"SNR","size_maj_arcmin":1.7,"size_min_arcmin":1.7,"d_arcmin":1.7,"r_arcmin":0.85,"d_pc":24.72548,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.057,"xray_rate_err":0.0075,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Y20","ref_discovery":"Yew 2020, PhD thesis","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":true,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.7,"hr1":0.74,"hr1_err":0.13,"hr2":-0.71,"hr2_err":0.11,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"73","id":"MCSNR J0543-6624","name":"J0543-6624","ra":85.9525,"dec":-66.3975,"klass":"SNR","size_maj_arcmin":5.6,"size_min_arcmin":5.6,"d_arcmin":5.6,"r_arcmin":2.8,"d_pc":81.44864,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.105,"xray_rate_err":0.007,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.6,"hr1_err":0.05,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"74","id":"MCSNR J0543-6858","name":"J0543-6858","ra":85.7745833333,"dec":-68.9841666667,"klass":"SNR","size_maj_arcmin":5.6,"size_min_arcmin":5.6,"d_arcmin":5.6,"r_arcmin":2.8,"d_pc":81.44864,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.709,"xray_rate_err":0.02,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"LHG81","ref_discovery":"1981ApJ...248..925L (Long, Helfand & Grabelsky 1981)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L299","lx_1e35":1.68,"nh_1e21":0.4,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":4.44,"age_l17_yr":13700.0,"n0_cm3":0.025,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"X","age_b17_kyr":10.8,"age_b17_err_kyr":7.3,"age_b17_ref":"Warth et al. (2014)","sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.35+0.07-0.08","kt_z26_kev":"0.96+0.46-0.23","tau_z26_1e11":"0.08+0.02-0.01","fx_z26_1e-14":"52.7\u00b11.1","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"75","id":"MCSNR J0547-6941","name":"J0547-6941","ra":86.8466666667,"dec":-69.6897222222,"klass":"SNR","size_maj_arcmin":2.7,"size_min_arcmin":2.7,"d_arcmin":2.7,"r_arcmin":1.35,"d_pc":39.26988,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.63,"xray_rate_err":0.013,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L316A","lx_1e35":1.26,"nh_1e21":0.92,"age_kyr":27000.0,"age_err_kyr":null,"alpha_radio":-0.54,"alpha_radio_err":0.16,"s_1ghz_jy":0.5217,"e0_1e51_erg":0.771,"age_l17_yr":4950.0,"n0_cm3":0.105,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"TNq","age_b17_kyr":33.0,"age_b17_err_kyr":6.0,"age_b17_ref":"Williams & Chu (2005)","sigma_1ghz_b17_1e-20":1.96,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.38+0.07-0.05","kt_z26_kev":"0.97+0.04-0.04","tau_z26_1e11":"1.76+0.46-0.31","fx_z26_1e-14":"54.9\u00b11.0","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"76","id":"MCSNR J0547-6943","name":"J0547-6943","ra":86.7466666667,"dec":-69.7180555556,"klass":"SNR","size_maj_arcmin":4.4,"size_min_arcmin":3.0,"d_arcmin":3.7,"r_arcmin":1.85,"d_pc":53.81428,"pa_deg":35.0,"shape":"ellipse","xray_rate_ctss":0.62,"xray_rate_err":0.014,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.3783783784,"eccentricity":0.7315216791,"ref_discovery_code":"MC73","ref_discovery":"1973ApJ...180..725M (Mathewson & Clarke 1973)","ref_confidence":"verify-bibcode","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L316B","lx_1e35":1.47,"nh_1e21":0.63,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.53,"alpha_radio_err":0.16,"s_1ghz_jy":0.7282,"e0_1e51_erg":0.362,"age_l17_yr":18600.0,"n0_cm3":0.13,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":40.5,"age_b17_err_kyr":1.5,"age_b17_ref":"Nishiuchi et al. (2001)","sigma_1ghz_b17_1e-20":1.23,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.28+0.14-0.07","kt_z26_kev":"0.91+0.15-0.1","tau_z26_1e11":"0.9+0.20-0.29","fx_z26_1e-14":"48.5\u00b11.0","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"77","id":"MCSNR J0547-7025","name":"J0547-7025","ra":86.9508333333,"dec":-70.415,"klass":"SNR","size_maj_arcmin":3.4,"size_min_arcmin":3.4,"d_arcmin":3.4,"r_arcmin":1.7,"d_pc":49.45096,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":1.7,"xray_rate_err":0.02,"xray_rate_is_upper_limit":false,"sn_type":"Ia?","ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"MFD83","ref_discovery":"MFD83","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"B0548-704","lx_1e35":2.94,"nh_1e21":0.88,"age_kyr":7100.0,"age_err_kyr":null,"alpha_radio":-0.56,"alpha_radio_err":0.03,"s_1ghz_jy":0.0632,"e0_1e51_erg":0.257,"age_l17_yr":11700.0,"n0_cm3":0.271,"in_m16":true,"in_b17":true,"in_l17":true,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":1.0,"sn_type_m16":"Ia","sn_type_b17":"X","age_b17_kyr":7.1,"age_b17_err_kyr":null,"age_b17_ref":"Maggi et al. (2016)","sigma_1ghz_b17_1e-20":0.272,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"0.50+0.05-0.05","kt_z26_kev":"0.68+0.07-0.08","tau_z26_1e11":"0.22+0.05-0.03","fx_z26_1e-14":"125.2\u00b11.5","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"78","id":"MCSNR J0550-6823","name":"J0550-6823","ra":87.62875,"dec":-68.3952777778,"klass":"SNR","size_maj_arcmin":7.0,"size_min_arcmin":5.6,"d_arcmin":6.3,"r_arcmin":3.15,"d_pc":91.62972,"pa_deg":25.0,"shape":"ellipse","xray_rate_ctss":0.494,"xray_rate_err":0.012,"xray_rate_is_upper_limit":false,"sn_type":"CC","ovality":0.2222222222,"eccentricity":0.6,"ref_discovery_code":"BFC12b","ref_discovery":"BFC12b","ref_confidence":"unmapped","ref_confirm_code":null,"ref_confirm":null,"alias":"DEM L328","lx_1e35":1.22,"nh_1e21":1.22,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.41,"alpha_radio_err":0.02,"s_1ghz_jy":0.6495,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":true,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":3.0,"sn_type_m16":null,"sn_type_b17":"CCq","age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":"Williams et al. (2004); Williams et al. (2004); Seward et al. (2006); Williams et al. (1999); Jaskot et al. (2011); Ghavamian et al. (2003); Hughes et al. (2006); Klimek et al. (2010); Maggi et al. (2016); Bozzetto et al. (2014b); Maggi et al. (2014); Hughes et al. (1995); Hovey et al. (2015); Reid et al. (2015); Desai et al. (2010); Rosado et al. (1993); Borkowski et al. (2006b); Williams et al. (2006); Borkowski et al. (2007); Park et al. (2003); Park et al. (2012); Kavanagh et al. (2013); Maggi et al. (2012); Williams et al. (2005); Kavanagh et al. (2015c); Hendrick et al. (2003); Borkowski et al. (2006a); Warren et al. (2003); Seward et al. (2012); Kavanagh et al. (2015a); Seward et al. (2010); Seward et al. (2010); Crawford et al. (2014); Grondin et al. (2012); Warth et al. (2014); Nishiuchi et al. (2001); Williams & Chu (2005)","sigma_1ghz_b17_1e-20":0.335,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":"<0.04","kt_z26_kev":"0.77+0.10-0.10","tau_z26_1e11":"0.33+0.08-0.07","fx_z26_1e-14":"37.7\u00b10.5","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c01","id":"J0444-6758","name":"J0444-6758","ra":71.1158333333,"dec":-67.9702777778,"klass":"SNR_candidate","size_maj_arcmin":2.6,"size_min_arcmin":1.8,"d_arcmin":2.2,"r_arcmin":1.1,"d_pc":31.99768,"pa_deg":80.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.3636363636,"eccentricity":0.7216024246,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.7,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c02","id":"J0450-6818","name":"J0450-6818","ra":72.5516666667,"dec":-68.3013888889,"klass":"SNR_candidate","size_maj_arcmin":7.4,"size_min_arcmin":6.6,"d_arcmin":7.0,"r_arcmin":3.5,"d_pc":101.8108,"pa_deg":105.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.1142857143,"eccentricity":0.452248663,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.8,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c03","id":"J045145.7-671724","name":"J045145.7-671724","ra":72.9404166667,"dec":-67.29,"klass":"SNR_candidate","size_maj_arcmin":9.8,"size_min_arcmin":5.6,"d_arcmin":7.7,"r_arcmin":3.85,"d_pc":111.99188,"pa_deg":60.0,"shape":"ellipse","xray_rate_ctss":0.206,"xray_rate_err":0.019,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.5454545455,"eccentricity":0.8206518066,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.0,"hr1_err":0.09,"hr2":-0.64,"hr2_err":0.13,"hr3":-0.2,"hr3_err":0.42,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c04","id":"J0451-6906","name":"J0451-6906","ra":72.9120833333,"dec":-69.1072222222,"klass":"SNR_candidate","size_maj_arcmin":10.0,"size_min_arcmin":6.4,"d_arcmin":8.2,"r_arcmin":4.1,"d_pc":119.26408,"pa_deg":345.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.4390243902,"eccentricity":0.7683749085,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c05","id":"J0451-6951","name":"J0451-6951","ra":72.9695833333,"dec":-69.8613888889,"klass":"SNR_candidate","size_maj_arcmin":2.8,"size_min_arcmin":2.8,"d_arcmin":2.8,"r_arcmin":1.4,"d_pc":40.72432,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c06","id":"J0452-6638","name":"J0452-6638","ra":73.1758333333,"dec":-66.6452777778,"klass":"SNR_candidate","size_maj_arcmin":4.6,"size_min_arcmin":6.6,"d_arcmin":5.6,"r_arcmin":2.8,"d_pc":81.44864,"pa_deg":0.0,"shape":"ellipse","xray_rate_ctss":0.015,"xray_rate_err":0.0183,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.3571428571,"eccentricity":0.7171005798,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.13,"hr1_err":0.33,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c07","id":"J0455-6830","name":"J0455-6830","ra":73.9033333333,"dec":-68.5097222222,"klass":"SNR_candidate","size_maj_arcmin":1.3,"size_min_arcmin":1.3,"d_arcmin":1.3,"r_arcmin":0.65,"d_pc":18.90772,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.9,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c08","id":"J045625.5-683052","name":"J045625.5-683052","ra":74.10625,"dec":-68.5144444444,"klass":"SNR_candidate","size_maj_arcmin":2.7,"size_min_arcmin":2.7,"d_arcmin":2.7,"r_arcmin":1.35,"d_pc":39.26988,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.029,"xray_rate_err":0.0078,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.89,"hr1_err":0.35,"hr2":-0.79,"hr2_err":0.23,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c09","id":"J0457-6739","name":"J0457-6739","ra":74.3875,"dec":-67.6513888889,"klass":"SNR_candidate","size_maj_arcmin":2.5,"size_min_arcmin":2.5,"d_arcmin":2.5,"r_arcmin":1.25,"d_pc":36.361,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.5,"alpha_radio_err":0.0,"s_1ghz_jy":0.0304,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"B17-Candidates-New","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.0732,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c10","id":"J0457-6823","name":"J0457-6823","ra":74.39,"dec":-68.3941666667,"klass":"SNR_candidate","size_maj_arcmin":6.6,"size_min_arcmin":3.8,"d_arcmin":5.2,"r_arcmin":2.6,"d_pc":75.63088,"pa_deg":330.0,"shape":"ellipse","xray_rate_ctss":0.025,"xray_rate_err":0.0128,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.5384615385,"eccentricity":0.8176204584,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.69,"hr1_err":0.37,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c11","id":"J0457-6923","name":"J0457-6923","ra":74.2825,"dec":-69.3994444444,"klass":"SNR_candidate","size_maj_arcmin":4.0,"size_min_arcmin":3.4,"d_arcmin":3.7,"r_arcmin":1.85,"d_pc":53.81428,"pa_deg":90.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.1621621622,"eccentricity":0.5267826876,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"B17-Candidates","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c12","id":"J0459-6757","name":"J0459-6757","ra":74.9791666667,"dec":-67.9502777778,"klass":"SNR_candidate","size_maj_arcmin":4.4,"size_min_arcmin":3.8,"d_arcmin":4.1,"r_arcmin":2.05,"d_pc":59.63204,"pa_deg":357.0,"shape":"ellipse","xray_rate_ctss":0.012,"xray_rate_err":0.0098,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.1463414634,"eccentricity":0.5041152957,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.42,"hr1_err":1.69,"hr2":0.27,"hr2_err":0.63,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c13","id":"J0459-7008b","name":"J0459-7008b","ra":74.91125,"dec":-70.1436111111,"klass":"SNR_candidate","size_maj_arcmin":3.8,"size_min_arcmin":3.2,"d_arcmin":3.5,"r_arcmin":1.75,"d_pc":50.9054,"pa_deg":150.0,"shape":"ellipse","xray_rate_ctss":0.173,"xray_rate_err":0.014,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.1714285714,"eccentricity":0.5393131982,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.32,"hr1_err":0.07,"hr2":-0.8,"hr2_err":0.12,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c14","id":"J0502-6739","name":"J0502-6739","ra":75.5104166667,"dec":-67.6586111111,"klass":"SNR_candidate","size_maj_arcmin":6.4,"size_min_arcmin":5.6,"d_arcmin":6.0,"r_arcmin":3.0,"d_pc":87.2664,"pa_deg":60.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.1333333333,"eccentricity":0.4841229183,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.6,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c15","id":"J0504-6901","name":"J0504-6901","ra":76.02,"dec":-69.02,"klass":"SNR_candidate","size_maj_arcmin":8.6,"size_min_arcmin":8.2,"d_arcmin":8.4,"r_arcmin":4.2,"d_pc":122.17296,"pa_deg":22.0,"shape":"ellipse","xray_rate_ctss":0.047,"xray_rate_err":0.0248,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0476190476,"eccentricity":0.3014297999,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.66,"hr1_err":0.33,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c16","id":"J0506-6509","name":"J0506-6509","ra":76.7045833333,"dec":-65.1552777778,"klass":"SNR_candidate","size_maj_arcmin":6.4,"size_min_arcmin":6.2,"d_arcmin":6.3,"r_arcmin":3.15,"d_pc":91.62972,"pa_deg":170.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.0317460317,"eccentricity":0.2480391854,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.6,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c17","id":"J050750.8-714241","name":"J050750.8-714241","ra":76.9616666667,"dec":-71.7113888889,"klass":"SNR_candidate","size_maj_arcmin":4.8,"size_min_arcmin":3.8,"d_arcmin":4.3,"r_arcmin":2.15,"d_pc":62.54092,"pa_deg":359.0,"shape":"ellipse","xray_rate_ctss":0.056,"xray_rate_err":0.0141,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.2325581395,"eccentricity":0.6109532624,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.58,"hr1_err":0.22,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c18","id":"J0507-7110","name":"J0507-7110","ra":76.8970833333,"dec":-71.1708333333,"klass":"SNR_candidate","size_maj_arcmin":7.4,"size_min_arcmin":6.0,"d_arcmin":6.7,"r_arcmin":3.35,"d_pc":97.44748,"pa_deg":0.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.2089552239,"eccentricity":0.5853083197,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"B17-Candidates-New","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c19","id":"J0508-6928","name":"J0508-6928","ra":77.19375,"dec":-69.4711111111,"klass":"SNR_candidate","size_maj_arcmin":5.5,"size_min_arcmin":5.5,"d_arcmin":5.5,"r_arcmin":2.75,"d_pc":79.9942,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.7,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c20","id":"J0509-6402","name":"J0509-6402","ra":77.3145833333,"dec":-64.0352777778,"klass":"SNR_candidate","size_maj_arcmin":5.4,"size_min_arcmin":4.0,"d_arcmin":4.7,"r_arcmin":2.35,"d_pc":68.35868,"pa_deg":50.0,"shape":"ellipse","xray_rate_ctss":0.031,"xray_rate_err":0.0076,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.2978723404,"eccentricity":0.6717910055,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.7,"hr1":-0.1,"hr1_err":0.08,"hr2":-0.2,"hr2_err":0.1,"hr3":-0.13,"hr3_err":0.14,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c21","id":"J051028.3-685329","name":"J051028.3-685329","ra":77.6179166667,"dec":-68.8913888889,"klass":"SNR_candidate","size_maj_arcmin":3.7,"size_min_arcmin":3.7,"d_arcmin":3.7,"r_arcmin":1.85,"d_pc":53.81428,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.072,"xray_rate_err":0.0113,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.29,"hr1_err":0.15,"hr2":-0.7,"hr2_err":0.33,"hr3":-0.09,"hr3_err":0.97,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c22","id":"J0513-6731","name":"J0513-6731","ra":78.3620833333,"dec":-67.5313888889,"klass":"SNR_candidate","size_maj_arcmin":5.0,"size_min_arcmin":3.6,"d_arcmin":4.3,"r_arcmin":2.15,"d_pc":62.54092,"pa_deg":60.0,"shape":"ellipse","xray_rate_ctss":0.044,"xray_rate_err":0.0096,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.3255813953,"eccentricity":0.6939740629,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.56,"alpha_radio_err":0.41,"s_1ghz_jy":0.0261,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"B17-Candidates","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.0897,"sii_ha_y21":null,"hr1":-0.61,"hr1_err":0.17,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c23","id":"J0517-6757","name":"J0517-6757","ra":79.4733333333,"dec":-67.9569444444,"klass":"SNR_candidate","size_maj_arcmin":1.4,"size_min_arcmin":1.4,"d_arcmin":1.4,"r_arcmin":0.7,"d_pc":20.36216,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.7,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c24","id":"J052126.5-685245","name":"J052126.5-685245","ra":80.3604166667,"dec":-68.8791666667,"klass":"SNR_candidate","size_maj_arcmin":5.2,"size_min_arcmin":5.2,"d_arcmin":5.2,"r_arcmin":2.6,"d_pc":75.63088,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.084,"xray_rate_err":0.0141,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.5,"hr1_err":0.2,"hr2":-0.75,"hr2_err":0.16,"hr3":-0.49,"hr3_err":0.78,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c25","id":"J052136.6-670741","name":"J052136.6-670741","ra":80.4025,"dec":-67.1280555556,"klass":"SNR_candidate","size_maj_arcmin":6.6,"size_min_arcmin":6.6,"d_arcmin":6.6,"r_arcmin":3.3,"d_pc":95.99304,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.031,"xray_rate_err":0.0137,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.23,"hr1_err":0.41,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c26","id":"J052148.7-693649","name":"J052148.7-693649","ra":80.4529166667,"dec":-69.6136111111,"klass":"SNR_candidate","size_maj_arcmin":5.2,"size_min_arcmin":5.2,"d_arcmin":5.2,"r_arcmin":2.6,"d_pc":75.63088,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.136,"xray_rate_err":0.02,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.38,"hr1_err":0.14,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c27","id":"J052330.7-680400","name":"J052330.7-680400","ra":80.8779166667,"dec":-68.0666666667,"klass":"SNR_candidate","size_maj_arcmin":3.9,"size_min_arcmin":3.9,"d_arcmin":3.9,"r_arcmin":1.95,"d_pc":56.72316,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.041,"xray_rate_err":0.0102,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.04,"hr1_err":0.21,"hr2":-0.89,"hr2_err":0.32,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c28","id":"J052502.7-662125","name":"J052502.7-662125","ra":81.26125,"dec":-66.3569444444,"klass":"SNR_candidate","size_maj_arcmin":5.1,"size_min_arcmin":5.1,"d_arcmin":5.1,"r_arcmin":2.55,"d_pc":74.17644,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.119,"xray_rate_err":0.011,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.01,"hr1_err":0.07,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c29","id":"J052849.7-671913","name":"J052849.7-671913","ra":82.2070833333,"dec":-67.3202777778,"klass":"SNR_candidate","size_maj_arcmin":3.8,"size_min_arcmin":3.8,"d_arcmin":3.8,"r_arcmin":1.9,"d_pc":55.26872,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.037,"xray_rate_err":0.0082,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.03,"hr1_err":0.22,"hr2":-0.45,"hr2_err":0.25,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c30","id":"J0528-7018","name":"J0528-7018","ra":82.1916666667,"dec":-70.2991666667,"klass":"SNR_candidate","size_maj_arcmin":9.2,"size_min_arcmin":8.8,"d_arcmin":9.0,"r_arcmin":4.5,"d_pc":130.8996,"pa_deg":140.0,"shape":"ellipse","xray_rate_ctss":0.011,"xray_rate_err":0.0331,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0444444444,"eccentricity":0.2916610405,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.9,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c31","id":"J053224.5-655411","name":"J053224.5-655411","ra":83.1020833333,"dec":-65.9030555556,"klass":"SNR_candidate","size_maj_arcmin":2.8,"size_min_arcmin":2.8,"d_arcmin":2.8,"r_arcmin":1.4,"d_pc":40.72432,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.038,"xray_rate_err":0.005,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.37,"hr1_err":0.12,"hr2":-0.65,"hr2_err":0.14,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c32","id":"J0534-6700","name":"J0534-6700","ra":83.6766666667,"dec":-66.9986111111,"klass":"SNR_candidate","size_maj_arcmin":3.0,"size_min_arcmin":2.6,"d_arcmin":2.8,"r_arcmin":1.4,"d_pc":40.72432,"pa_deg":0.0,"shape":"ellipse","xray_rate_ctss":0.017,"xray_rate_err":0.0044,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.1428571429,"eccentricity":0.4988876516,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.73,"hr1_err":0.26,"hr2":0.11,"hr2_err":0.63,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c33","id":"J0534-6720","name":"J0534-6720","ra":83.5204166667,"dec":-67.3475,"klass":"SNR_candidate","size_maj_arcmin":2.7,"size_min_arcmin":2.7,"d_arcmin":2.7,"r_arcmin":1.35,"d_pc":39.26988,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.099,"xray_rate_err":0.0127,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.66,"hr1_err":0.1,"hr2":-0.72,"hr2_err":0.37,"hr3":-0.14,"hr3_err":1.3,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c34","id":"J0538-6921","name":"J0538-6921","ra":84.56125,"dec":-69.3566666667,"klass":"SNR_candidate","size_maj_arcmin":5.6,"size_min_arcmin":5.4,"d_arcmin":5.5,"r_arcmin":2.75,"d_pc":79.9942,"pa_deg":0.0,"shape":"ellipse","xray_rate_ctss":0.383,"xray_rate_err":0.024,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0363636364,"eccentricity":0.2648642317,"ref_discovery_code":"B17","ref_discovery":"2017ApJS..230....2B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.59,"alpha_radio_err":0.04,"s_1ghz_jy":0.5207,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"B17-Candidates","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.9878,"sii_ha_y21":null,"hr1":0.24,"hr1_err":0.06,"hr2":-0.57,"hr2_err":0.07,"hr3":-0.7,"hr3_err":0.2,"nh_z26_1e22":"<0.03","kt_z26_kev":"1.01+1.28-0.17","tau_z26_1e11":"0.59+0.30-0.36","fx_z26_1e-14":"3.03\u00b10.15","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c35","id":"J0538-7004","name":"J0538-7004","ra":84.6870833333,"dec":-70.0733333333,"klass":"SNR_candidate","size_maj_arcmin":1.3,"size_min_arcmin":1.3,"d_arcmin":1.3,"r_arcmin":0.65,"d_pc":18.90772,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.8,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c36","id":"J0539-7001","name":"J0539-7001","ra":84.8979166667,"dec":-70.0311111111,"klass":"SNR_candidate","size_maj_arcmin":6.0,"size_min_arcmin":2.4,"d_arcmin":4.2,"r_arcmin":2.1,"d_pc":61.08648,"pa_deg":135.0,"shape":"ellipse","xray_rate_ctss":0.308,"xray_rate_err":0.014,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.8571428571,"eccentricity":0.916515139,"ref_discovery_code":"HP99","ref_discovery":"1999A&AS..139..277H (Haberl & Pietsch 1999)","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":-0.47,"alpha_radio_err":0.41,"s_1ghz_jy":0.0054,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":true,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"B17-Candidates","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":0.0115,"sii_ha_y21":null,"hr1":0.71,"hr1_err":0.04,"hr2":-0.88,"hr2_err":0.04,"hr3":-0.82,"hr3_err":0.47,"nh_z26_1e22":"0.11+0.07-0.05","kt_z26_kev":"0.49+0.03-0.05","tau_z26_1e11":"380+97-336","fx_z26_1e-14":"23.7\u00b10.5","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c37","id":"J0542-6852","name":"J0542-6852","ra":85.4970833333,"dec":-68.8669444444,"klass":"SNR_candidate","size_maj_arcmin":6.0,"size_min_arcmin":5.8,"d_arcmin":5.9,"r_arcmin":2.95,"d_pc":85.81196,"pa_deg":343.0,"shape":"ellipse","xray_rate_ctss":0.075,"xray_rate_err":0.0158,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0338983051,"eccentricity":0.2560381916,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.02,"hr1_err":0.12,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c38","id":"J0543-6906","name":"J0543-6906","ra":85.8625,"dec":-69.1225,"klass":"SNR_candidate","size_maj_arcmin":7.3,"size_min_arcmin":7.3,"d_arcmin":7.3,"r_arcmin":3.65,"d_pc":106.17412,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.397,"xray_rate_err":0.025,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.23,"hr1_err":0.06,"hr2":-0.53,"hr2_err":0.07,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c39","id":"J0543-6923","name":"J0543-6923","ra":85.81875,"dec":-69.3908333333,"klass":"SNR_candidate","size_maj_arcmin":9.6,"size_min_arcmin":7.0,"d_arcmin":8.3,"r_arcmin":4.15,"d_pc":120.71852,"pa_deg":0.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.313253012,"eccentricity":0.6843361544,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c40","id":"J0543-6928","name":"J0543-6928","ra":85.77625,"dec":-69.4783333333,"klass":"SNR_candidate","size_maj_arcmin":4.8,"size_min_arcmin":3.0,"d_arcmin":3.9,"r_arcmin":1.95,"d_pc":56.72316,"pa_deg":35.0,"shape":"ellipse","xray_rate_ctss":0.036,"xray_rate_err":0.0118,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.4615384615,"eccentricity":0.7806247498,"ref_discovery_code":"B23","ref_discovery":"2022MNRAS.518.2574B","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":true,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.38,"hr1_err":0.46,"hr2":0.14,"hr2_err":0.56,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c41","id":"J0548-6941","name":"J0548-6941","ra":87.205,"dec":-69.6894444444,"klass":"SNR_candidate","size_maj_arcmin":5.2,"size_min_arcmin":3.2,"d_arcmin":4.2,"r_arcmin":2.1,"d_pc":61.08648,"pa_deg":150.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.4761904762,"eccentricity":0.788226982,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":0.6,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c42","id":"J054949.7-700145","name":"J054949.7-700145","ra":87.4570833333,"dec":-70.0291666667,"klass":"SNR_candidate","size_maj_arcmin":5.2,"size_min_arcmin":3.4,"d_arcmin":4.3,"r_arcmin":2.15,"d_pc":62.54092,"pa_deg":160.0,"shape":"ellipse","xray_rate_ctss":0.058,"xray_rate_err":0.0082,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.4186046512,"eccentricity":0.756627522,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":0.76,"hr1_err":0.04,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c43","id":"J0549-6618","name":"J0549-6618","ra":87.3766666667,"dec":-66.2936111111,"klass":"SNR_candidate","size_maj_arcmin":2.2,"size_min_arcmin":2.0,"d_arcmin":2.1,"r_arcmin":1.05,"d_pc":30.54324,"pa_deg":45.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.0952380952,"eccentricity":0.4165977905,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":1.0,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c44","id":"J0549-6633","name":"J0549-6633","ra":87.3566666667,"dec":-66.5627777778,"klass":"SNR_candidate","size_maj_arcmin":5.8,"size_min_arcmin":4.2,"d_arcmin":5.0,"r_arcmin":2.5,"d_pc":72.722,"pa_deg":45.0,"shape":"ellipse","xray_rate_ctss":null,"xray_rate_err":null,"xray_rate_is_upper_limit":true,"sn_type":null,"ovality":0.32,"eccentricity":0.6896551724,"ref_discovery_code":"Y21","ref_discovery":"2021MNRAS.500.2336Y","ref_confidence":"ok","ref_confirm_code":null,"ref_confirm":null,"alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":true,"in_k22":false,"in_b23":false,"thesis_note":null,"dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":1.4,"hr1":null,"hr1_err":null,"hr2":null,"hr2_err":null,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c45","id":"MCSNR J0614-7251","name":"J0614-7251","ra":93.65875,"dec":-72.8533333333,"klass":"SNR","size_maj_arcmin":3.6,"size_min_arcmin":3.6,"d_arcmin":3.6,"r_arcmin":1.8,"d_pc":52.35984,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.276,"xray_rate_err":0.012,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"Za24","ref_discovery":"2024A&A...692A.237Z","ref_confidence":"ok","ref_confirm_code":"Sa25","ref_confirm":"2025A&A...693L..15S","alias":"J061438.1-725112","lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"eROSITA SNR candidate (Zangrandi+24) confirmed as an LMC SNR by Sasaki+25 (2025A&A...693L..15S): environment density and X-ray properties similar to the known LMC SNR population.","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.27,"hr1_err":0.04,"hr2":-0.75,"hr2_err":0.06,"hr3":-0.73,"hr3_err":0.4,"nh_z26_1e22":"<0.02","kt_z26_kev":"0.60+0.23-0.16","tau_z26_1e11":"0.15+0.11-0.05","fx_z26_1e-14":"20.6\u00b10.7","in_z26":true,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null},{"snr_key":"c46","id":"MCSNR J0624-6948","name":"J0624-6948","ra":96.05625,"dec":-69.8086111111,"klass":"SNR","size_maj_arcmin":4.5,"size_min_arcmin":4.5,"d_arcmin":4.5,"r_arcmin":2.25,"d_pc":65.4498,"pa_deg":0.0,"shape":"circle","xray_rate_ctss":0.037,"xray_rate_err":0.0073,"xray_rate_is_upper_limit":false,"sn_type":null,"ovality":0.0,"eccentricity":0.0,"ref_discovery_code":"F22","ref_discovery":"2022MNRAS.512..265F","ref_confidence":"ok","ref_confirm_code":"Sa25","ref_confirm":"2025A&A...693L..15S","alias":null,"lx_1e35":null,"nh_1e21":null,"age_kyr":null,"age_err_kyr":null,"alpha_radio":null,"alpha_radio_err":null,"s_1ghz_jy":null,"e0_1e51_erg":null,"age_l17_yr":null,"n0_cm3":null,"in_m16":false,"in_b17":false,"in_l17":false,"in_y21":false,"in_k22":false,"in_b23":false,"thesis_note":"SNR candidate (Filipovic+22; Zangrandi+24) confirmed as an LMC SNR by Sasaki+25 (2025A&A...693L..15S): radio shell spectral index and polarisation typical of an SNR; low-density environment, n0 < 0.01 cm^-3.","dataset_version":4,"hint_spec_m16":null,"sn_type_m16":null,"sn_type_b17":null,"age_b17_kyr":null,"age_b17_err_kyr":null,"age_b17_ref":null,"sigma_1ghz_b17_1e-20":null,"sii_ha_y21":null,"hr1":-0.07,"hr1_err":0.22,"hr2":0.13,"hr2_err":0.18,"hr3":null,"hr3_err":null,"nh_z26_1e22":null,"kt_z26_kev":null,"tau_z26_1e11":null,"fx_z26_1e-14":null,"in_z26":false,"age_k22_kyr":null,"e0_k22_1e51":null,"n0_k22_cm3":null}]