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=4
{ "next": "https://gwosc.org/api/v2/event-versions?format=api&include-default-parameters=true&page=5", "previous": "https://gwosc.org/api/v2/event-versions?format=api&include-default-parameters=true&page=3", "results_count": 358, "results_per_page": 20, "num_pages": 18, "page_number": 4, "results": [ { "name": "GW230925_143957", "shortName": "GW230925_143957-v1", "gps": 1379688015.5, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230925_143957-v1?format=api", "default_parameters": [ { "name": "far", "unit": "1/yr", "description": "na", "best": 8.2, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.55, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 8.0, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230924_124453", "shortName": "GW230924_124453-v1", "gps": 1379594711.8, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230924_124453-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 22.3, "upper_error": 3.1, "lower_error": -2.1, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.02, "upper_error": 0.18, "lower_error": -0.18, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 49.3, "upper_error": 6.6, "lower_error": -4.6, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 2400.0, "upper_error": 1000.0, "lower_error": -1000.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 28.8, "upper_error": 5.9, "lower_error": -4.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 23.1, "upper_error": 4.4, "lower_error": -4.4, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.42, "upper_error": 0.15, "lower_error": -0.16, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 51.8, "upper_error": 7.0, "lower_error": -4.9, "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": 13.5, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230922_040658", "shortName": "GW230922_040658-v1", "gps": 1379390836.1, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230922_040658-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 52.0, "upper_error": 17.0, "lower_error": -11.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.31, "upper_error": 0.25, "lower_error": -0.32, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 119.0, "upper_error": 34.0, "lower_error": -21.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 6400.0, "upper_error": 4100.0, "lower_error": -3500.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 76.0, "upper_error": 29.0, "lower_error": -18.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 51.0, "upper_error": 23.0, "lower_error": -24.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.96, "upper_error": 0.47, "lower_error": -0.45, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 125.0, "upper_error": 37.0, "lower_error": -21.0, "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": 12.5, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230922_020344", "shortName": "GW230922_020344-v1", "gps": 1379383442.9, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230922_020344-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 29.2, "upper_error": 3.6, "lower_error": -2.6, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.03, "upper_error": 0.2, "lower_error": -0.21, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 65.4, "upper_error": 8.4, "lower_error": -6.1, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 1640.0, "upper_error": 730.0, "lower_error": -730.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 39.3, "upper_error": 10.0, "lower_error": -6.3, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 29.2, "upper_error": 5.6, "lower_error": -6.2, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.31, "upper_error": 0.11, "lower_error": -0.12, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 68.6, "upper_error": 8.9, "lower_error": -6.5, "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": 13.4, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230920_071124", "shortName": "GW230920_071124-v1", "gps": 1379229102.7, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230920_071124-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 23.9, "upper_error": 4.6, "lower_error": -3.4, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 53.9, "upper_error": 9.6, "lower_error": -7.6, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 2900.0, "upper_error": 1800.0, "lower_error": -1400.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 32.4, "upper_error": 9.1, "lower_error": -6.2, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 23.8, "upper_error": 6.6, "lower_error": -6.9, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.5, "upper_error": 0.24, "lower_error": -0.21, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 56.4, "upper_error": 10.2, "lower_error": -8.0, "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": 11.1, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230920_064709", "shortName": "GW230920_064709-v1", "gps": 1379227647.3, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230920_064709-v1?format=api", "default_parameters": [ { "name": "far", "unit": "1/yr", "description": "na", "best": 4.8, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.81, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 9.5, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230919_215712", "shortName": "GW230919_215712-v1", "gps": 1379195850.0, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230919_215712-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 21.0, "upper_error": 1.8, "lower_error": -1.9, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.18, "upper_error": 0.12, "lower_error": -0.13, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 46.5, "upper_error": 3.9, "lower_error": -4.3, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 1330.0, "upper_error": 790.0, "lower_error": -500.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 27.3, "upper_error": 5.5, "lower_error": -3.7, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 21.4, "upper_error": 3.5, "lower_error": -4.3, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.26, "upper_error": 0.13, "lower_error": -0.09, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 49.0, "upper_error": 4.2, "lower_error": -4.5, "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": 16.8, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230914_111401", "shortName": "GW230914_111401-v1", "gps": 1378725259.7, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230914_111401-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 39.6, "upper_error": 7.5, "lower_error": -6.2, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": 0.12, "upper_error": 0.19, "lower_error": -0.2, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 90.9, "upper_error": 14.0, "lower_error": -9.7, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 2700.0, "upper_error": 1600.0, "lower_error": -1200.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 59.0, "upper_error": 12.0, "lower_error": -11.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 36.0, "upper_error": 13.0, "lower_error": -12.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.47, "upper_error": 0.23, "lower_error": -0.19, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 95.0, "upper_error": 15.0, "lower_error": -10.0, "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": 17.2, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230911_195324", "shortName": "GW230911_195324-v1", "gps": 1378497222.2, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230911_195324-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 23.1, "upper_error": 3.4, "lower_error": -3.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "chi_eff", "unit": "", "description": "na", "best": -0.03, "upper_error": 0.19, "lower_error": -0.23, "is_upper_limit": false, "is_lower_limit": false }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 53.0, "upper_error": 7.4, "lower_error": -6.7, "is_upper_limit": false, "is_lower_limit": false }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 1370.0, "upper_error": 1160.0, "lower_error": -720.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 33.6, "upper_error": 8.1, "lower_error": -7.3, "is_upper_limit": false, "is_lower_limit": false }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 21.7, "upper_error": 5.6, "lower_error": -5.7, "is_upper_limit": false, "is_lower_limit": false }, { "name": "redshift", "unit": "", "description": "na", "best": 0.26, "upper_error": 0.18, "lower_error": -0.13, "is_upper_limit": false, "is_lower_limit": false }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 55.3, "upper_error": 7.8, "lower_error": -7.0, "is_upper_limit": false, "is_lower_limit": false }, { "name": "far", "unit": "1/yr", "description": "na", "best": 0.001, "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": 11.1, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230904_152545", "shortName": "GW230904_152545-v1", "gps": 1377876363.2, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230904_152545-v1?format=api", "default_parameters": [ { "name": "far", "unit": "1/yr", "description": "na", "best": 18.0, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "p_astro", "unit": "", "description": "na", "best": 0.74, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false }, { "name": "network_matched_filter_snr", "unit": "", "description": "na", "best": 9.2, "upper_error": null, "lower_error": null, "is_upper_limit": false, "is_lower_limit": false } ] }, { "name": "GW230904_051013", "shortName": "GW230904_051013-v1", "gps": 1377839431.1, "version": 1, "catalog": "GWTC-4.0", "detectors": [ "H1", "L1" ], "detail_url": "https://gwosc.org/api/v2/event-versions/GW230904_051013-v1?format=api", "default_parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 7.54, 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