Event Version List
Return all event versions
Query Parameters
name-contains=<string>release=<cat1>[,<cat2>]min-<param-name>=<value>max-<param-name>=<value>lastver=<bool>: iftrueor empty, include only the last version of each event on the list. Defaults to false.include-default-parameters: iftrueor empty, include a list with the preferred values for default parameters.pagesize=<int>: Number of results to return per page.
Find the full list of allowed parameter <param-name>s in the /default-parameters/ endpoint.
Example:
GET /api/v2/event-versions?format=api&include-default-parameters=true&page=3
{ "next": "https://gwosc.org/api/v2/event-versions?format=api&include-default-parameters=true&page=4", "previous": "https://gwosc.org/api/v2/event-versions?format=api&include-default-parameters=true&page=2", "results_count": 358, "results_per_page": 20, "num_pages": 18, "page_number": 3, "results": [ { "name": "GW231102_071736", "shortName": "GW231102_071736-v1", "gps": 1382944674.4, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231102_071736-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 43.4, "upper_error": 9.3, "lower_error": -6.3, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.06, "upper_error": 0.23, "lower_error": -0.22, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 98.0, "upper_error": 19.0, "lower_error": -12.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 3800.0, "upper_error": 2100.0, "lower_error": -1800.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 61.0, "upper_error": 14.0, "lower_error": -12.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 43.0, "upper_error": 13.0, "lower_error": -13.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.63, "upper_error": 0.26, "lower_error": -0.26, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 102.0, "upper_error": 21.0, "lower_error": -13.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "far", "unit": "1/yr", "description": "na", "best": 1e-05, "upper_error": null, "lower_error": null, "is_upper_limit": true, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.99, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": true }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 15.6, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231102_052214", "shortName": "GW231102_052214-v1", "gps": 1382937752.4, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231102_052214-v1?format=api", "default_parameters": [ { "name": "far", "unit": "1/yr", "description": "na", "best": 4.0, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.72, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 7.9, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231029_111508", "shortName": "GW231029_111508-v1", "gps": 1382613326.8, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231029_111508-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 44.2, "upper_error": 10.5, "lower_error": -8.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.14, "upper_error": 0.24, "lower_error": -0.24, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 101.0, "upper_error": 21.0, "lower_error": -15.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 3100.0, "upper_error": 2400.0, "lower_error": -1700.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 65.0, "upper_error": 17.0, "lower_error": -14.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 42.0, "upper_error": 15.0, "lower_error": -15.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.53, "upper_error": 0.32, "lower_error": -0.25, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 106.0, "upper_error": 22.0, "lower_error": -16.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "far", "unit": "1/yr", "description": "na", "best": 5.2000000000000004e-05, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.99, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": true }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 10.8, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231028_153006", "shortName": "GW231028_153006-v1", "gps": 1382542224.3, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231028_153006-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 63.0, "upper_error": 13.0, "lower_error": -10.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.44, "upper_error": 0.16, "lower_error": -0.2, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 144.0, "upper_error": 27.0, "lower_error": -13.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 4100.0, "upper_error": 1400.0, "lower_error": -1900.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 95.0, "upper_error": 33.0, "lower_error": -20.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 58.0, "upper_error": 21.0, "lower_error": -25.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.67, "upper_error": 0.18, "lower_error": -0.27, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 152.0, "upper_error": 29.0, "lower_error": -14.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "far", "unit": "1/yr", "description": "na", "best": 1e-05, "upper_error": null, "lower_error": null, "is_upper_limit": true, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.99, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": true }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 22.4, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231026_130704", "shortName": "GW231026_130704-v1", "gps": 1382360842.2, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231026_130704-v1?format=api", "default_parameters": [ { "name": "far", "unit": "1/yr", "description": "na", "best": 1.7, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.93, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 8.3, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231020_142947", "shortName": "GW231020_142947-v1", "gps": 1381847405.6, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231020_142947-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 8.06, "upper_error": 0.81, "lower_error": -0.53, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.15, "upper_error": 0.25, "lower_error": -0.12, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 18.9, "upper_error": 6.3, "lower_error": -2.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 1230.0, "upper_error": 520.0, "lower_error": -630.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 12.1, "upper_error": 9.1, "lower_error": -2.7, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 7.3, "upper_error": 2.1, "lower_error": -2.9, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.24, "upper_error": 0.09, "lower_error": -0.11, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 19.8, "upper_error": 6.0, "lower_error": -2.1, "is_upper_limit": false, "is_lower_limit": false }, { "name": "far", "unit": "1/yr", "description": "na", "best": 1e-05, "upper_error": null, "lower_error": null, "is_upper_limit": true, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.99, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": true }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 12.0, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231018_233037", "shortName": "GW231018_233037-v1", "gps": 1381707055.0, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231018_233037-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 7.9, "upper_error": 0.88, "lower_error": -0.68, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.01, "upper_error": 0.17, "lower_error": -0.13, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 18.2, "upper_error": 3.3, "lower_error": -2.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 1530.0, "upper_error": 760.0, "lower_error": -730.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 11.6, "upper_error": 4.9, "lower_error": -2.5, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 7.2, "upper_error": 1.9, "lower_error": -2.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.29, "upper_error": 0.12, "lower_error": -0.13, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 19.1, "upper_error": 3.3, "lower_error": -2.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "far", "unit": "1/yr", "description": "na", "best": 0.68, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.93, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 9.1, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231014_040532", "shortName": "GW231014_040532-v1", "gps": 1381291551.0, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231014_040532-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 15.0, "upper_error": 2.7, "lower_error": -1.9, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.17, "upper_error": 0.26, "lower_error": -0.28, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 33.8, "upper_error": 6.6, "lower_error": -4.3, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 2300.0, "upper_error": 1400.0, "lower_error": -1200.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 20.6, "upper_error": 7.8, "lower_error": -4.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 14.7, "upper_error": 3.9, "lower_error": -4.3, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.42, "upper_error": 0.2, "lower_error": -0.2, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 35.5, "upper_error": 7.0, "lower_error": -4.6, "is_upper_limit": false, "is_lower_limit": false }, { "name": "far", "unit": "1/yr", "description": "na", "best": 0.21, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.96, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 9.0, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231013_135504", "shortName": "GW231013_135504-v1", "gps": 1381240522.4, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231013_135504-v1?format=api", "default_parameters": [ { "name": "far", "unit": "1/yr", "description": "na", "best": 64.0, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.54, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 8.4, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231008_142521", "shortName": "GW231008_142521-v1", "gps": 1380810339.8, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW231008_142521-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 28.9, "upper_error": 6.8, "lower_error": -5.6, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": -0.01, "upper_error": 0.26, "lower_error": -0.28, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 69.0, "upper_error": 15.0, "lower_error": -13.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 3000.0, "upper_error": 2500.0, "lower_error": -1300.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 45.0, "upper_error": 17.0, "lower_error": -12.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 25.5, "upper_error": 10.7, "lower_error": -9.7, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.51, "upper_error": 0.33, "lower_error": -0.2, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 71.0, "upper_error": 16.0, "lower_error": -13.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "far", "unit": "1/yr", "description": "na", "best": 0.0016, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.99, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": true }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 9.3, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW231005_144455", "shortName": "GW231005_144455-v1", "gps": 1380552313.4, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": 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