Return all events from a given catalog.

Query parameters:

  • include-default-parameters: if true or empty, include a list with the preferred values for default parameters.
  • pagesize=<int>: Number of results to return per page.

Rel URLs:

  • Follow parameters_url for a list of parameter estimations.
  • Follow timelines_url for a list of timelines and segments.
GET /api/v2/catalogs/GWTC-4.1/events?format=api&include-default-parameters=true&page=3
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "next": "https://gwosc.org/api/v2/catalogs/GWTC-4.1/events?format=api&include-default-parameters=true&page=4",
    "previous": "https://gwosc.org/api/v2/catalogs/GWTC-4.1/events?format=api&include-default-parameters=true&page=2",
    "results_count": 140,
    "results_per_page": 20,
    "num_pages": 7,
    "page_number": 3,
    "results": [
        {
            "name": "GW231102_052214",
            "shortName": "GW231102_052214-v2",
            "gps": 1382937752.4,
            "version": 2,
            "catalog": "GWTC-4.1",
            "detectors": [
                "H1",
                "L1"
            ],
            "detail_url": "https://gwosc.org/api/v2/event-versions/GW231102_052214-v2?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,
                    "decimal_places": 1
                },
                {
                    "name": "p_astro",
                    "unit": "",
                    "description": "na",
                    "best": 0.72,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 1
                }
            ]
        },
        {
            "name": "GW231029_111508",
            "shortName": "GW231029_111508-v2",
            "gps": 1382613326.8,
            "version": 2,
            "catalog": "GWTC-4.1",
            "detectors": [
                "L1"
            ],
            "detail_url": "https://gwosc.org/api/v2/event-versions/GW231029_111508-v2?format=api",
            "default_parameters": [
                {
                    "name": "chirp_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 44.4,
                    "upper_error": 10.4,
                    "lower_error": -8.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "chi_eff",
                    "unit": "",
                    "description": "na",
                    "best": 0.14,
                    "upper_error": 0.24,
                    "lower_error": -0.23,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "final_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 101.0,
                    "upper_error": 21.0,
                    "lower_error": -16.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "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,
                    "decimal_places": 0
                },
                {
                    "name": "mass_1_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 65.0,
                    "upper_error": 18.0,
                    "lower_error": -14.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "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,
                    "decimal_places": 0
                },
                {
                    "name": "redshift",
                    "unit": "",
                    "description": "na",
                    "best": 0.53,
                    "upper_error": 0.32,
                    "lower_error": -0.26,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 0
                },
                {
                    "name": "far",
                    "unit": "1/yr",
                    "description": "na",
                    "best": 5.1e-05,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 6
                },
                {
                    "name": "p_astro",
                    "unit": "",
                    "description": "na",
                    "best": 0.99,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": true,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 1
                }
            ]
        },
        {
            "name": "GW231028_153006",
            "shortName": "GW231028_153006-v2",
            "gps": 1382542224.3,
            "version": 2,
            "catalog": "GWTC-4.1",
            "detectors": [
                "H1",
                "L1"
            ],
            "detail_url": "https://gwosc.org/api/v2/event-versions/GW231028_153006-v2?format=api",
            "default_parameters": [
                {
                    "name": "chirp_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 63.0,
                    "upper_error": 13.1,
                    "lower_error": -9.7,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "chi_eff",
                    "unit": "",
                    "description": "na",
                    "best": 0.45,
                    "upper_error": 0.16,
                    "lower_error": -0.19,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 0
                },
                {
                    "name": "luminosity_distance",
                    "unit": "Mpc",
                    "description": "na",
                    "best": 4200.0,
                    "upper_error": 1300.0,
                    "lower_error": -1900.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "mass_1_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 94.0,
                    "upper_error": 32.0,
                    "lower_error": -19.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "mass_2_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 59.0,
                    "upper_error": 21.0,
                    "lower_error": -24.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "redshift",
                    "unit": "",
                    "description": "na",
                    "best": 0.68,
                    "upper_error": 0.17,
                    "lower_error": -0.26,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "total_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 153.0,
                    "upper_error": 29.0,
                    "lower_error": -14.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "far",
                    "unit": "1/yr",
                    "description": "na",
                    "best": 1e-05,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": true,
                    "is_lower_limit": false,
                    "decimal_places": 6
                },
                {
                    "name": "p_astro",
                    "unit": "",
                    "description": "na",
                    "best": 0.99,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": true,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 1
                }
            ]
        },
        {
            "name": "GW231026_130704",
            "shortName": "GW231026_130704-v2",
            "gps": 1382360842.2,
            "version": 2,
            "catalog": "GWTC-4.1",
            "detectors": [
                "H1",
                "L1"
            ],
            "detail_url": "https://gwosc.org/api/v2/event-versions/GW231026_130704-v2?format=api",
            "default_parameters": [
                {
                    "name": "chirp_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 22.8,
                    "upper_error": 10.3,
                    "lower_error": -5.7,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "chi_eff",
                    "unit": "",
                    "description": "na",
                    "best": 0.03,
                    "upper_error": 0.36,
                    "lower_error": -0.36,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "final_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 53.0,
                    "upper_error": 28.0,
                    "lower_error": -13.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "luminosity_distance",
                    "unit": "Mpc",
                    "description": "na",
                    "best": 4400.0,
                    "upper_error": 4000.0,
                    "lower_error": -2400.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "mass_1_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 34.0,
                    "upper_error": 27.0,
                    "lower_error": -11.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "mass_2_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 20.8,
                    "upper_error": 9.8,
                    "lower_error": -8.2,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "redshift",
                    "unit": "",
                    "description": "na",
                    "best": 0.71,
                    "upper_error": 0.49,
                    "lower_error": -0.33,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "total_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 55.0,
                    "upper_error": 29.0,
                    "lower_error": -14.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "far",
                    "unit": "1/yr",
                    "description": "na",
                    "best": 0.7599999999999999,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "p_astro",
                    "unit": "",
                    "description": "na",
                    "best": 0.95,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 1
                }
            ]
        },
        {
            "name": "GW231025_142306",
            "shortName": "GW231025_142306-v1",
            "gps": 1382279004.1,
            "version": 1,
            "catalog": "GWTC-4.1",
            "detectors": [
                "H1",
                "L1"
            ],
            "detail_url": "https://gwosc.org/api/v2/event-versions/GW231025_142306-v1?format=api",
            "default_parameters": [
                {
                    "name": "far",
                    "unit": "1/yr",
                    "description": "na",
                    "best": 5.3,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "p_astro",
                    "unit": "",
                    "description": "na",
                    "best": 0.71,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 1
                }
            ]
        },
        {
            "name": "GW231024_023603",
            "shortName": "GW231024_023603-v1",
            "gps": 1382150181.2,
            "version": 1,
            "catalog": "GWTC-4.1",
            "detectors": [
                "H1",
                "L1"
            ],
            "detail_url": "https://gwosc.org/api/v2/event-versions/GW231024_023603-v1?format=api",
            "default_parameters": [
                {
                    "name": "far",
                    "unit": "1/yr",
                    "description": "na",
                    "best": 14.0,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "p_astro",
                    "unit": "",
                    "description": "na",
                    "best": 0.51,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 1
                }
            ]
        },
        {
            "name": "GW231020_142947",
            "shortName": "GW231020_142947-v2",
            "gps": 1381847405.6,
            "version": 2,
            "catalog": "GWTC-4.1",
            "detectors": [
                "H1",
                "L1"
            ],
            "detail_url": "https://gwosc.org/api/v2/event-versions/GW231020_142947-v2?format=api",
            "default_parameters": [
                {
                    "name": "chirp_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 8.07,
                    "upper_error": 0.83,
                    "lower_error": -0.52,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "chi_eff",
                    "unit": "",
                    "description": "na",
                    "best": 0.14,
                    "upper_error": 0.24,
                    "lower_error": -0.12,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "final_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 18.8,
                    "upper_error": 5.6,
                    "lower_error": -2.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "luminosity_distance",
                    "unit": "Mpc",
                    "description": "na",
                    "best": 1230.0,
                    "upper_error": 510.0,
                    "lower_error": -640.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "mass_1_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 12.0,
                    "upper_error": 8.4,
                    "lower_error": -2.6,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "mass_2_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 7.4,
                    "upper_error": 2.0,
                    "lower_error": -2.8,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "redshift",
                    "unit": "",
                    "description": "na",
                    "best": 0.24,
                    "upper_error": 0.08,
                    "lower_error": -0.12,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "total_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 19.8,
                    "upper_error": 5.4,
                    "lower_error": -2.1,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "far",
                    "unit": "1/yr",
                    "description": "na",
                    "best": 1e-05,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": true,
                    "is_lower_limit": false,
                    "decimal_places": 6
                },
                {
                    "name": "p_astro",
                    "unit": "",
                    "description": "na",
                    "best": 0.99,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": true,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 1
                }
            ]
        },
        {
            "name": "GW231018_233037",
            "shortName": "GW231018_233037-v2",
            "gps": 1381707055.0,
            "version": 2,
            "catalog": "GWTC-4.1",
            "detectors": [
                "H1",
                "L1"
            ],
            "detail_url": "https://gwosc.org/api/v2/event-versions/GW231018_233037-v2?format=api",
            "default_parameters": [
                {
                    "name": "chirp_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 7.9,
                    "upper_error": 0.89,
                    "lower_error": -0.67,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "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,
                    "decimal_places": 2
                },
                {
                    "name": "final_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 18.2,
                    "upper_error": 3.5,
                    "lower_error": -1.9,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "luminosity_distance",
                    "unit": "Mpc",
                    "description": "na",
                    "best": 1540.0,
                    "upper_error": 740.0,
                    "lower_error": -740.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 0
                },
                {
                    "name": "mass_1_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 11.6,
                    "upper_error": 5.1,
                    "lower_error": -2.4,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "mass_2_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 7.3,
                    "upper_error": 1.9,
                    "lower_error": -2.1,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "redshift",
                    "unit": "",
                    "description": "na",
                    "best": 0.29,
                    "upper_error": 0.12,
                    "lower_error": -0.13,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "total_mass_source",
                    "unit": "M_sun",
                    "description": "na",
                    "best": 19.0,
                    "upper_error": 3.4,
                    "lower_error": -2.0,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 1
                },
                {
                    "name": "far",
                    "unit": "1/yr",
                    "description": "na",
                    "best": 0.68,
                    "upper_error": null,
                    "lower_error": null,
                    "is_upper_limit": false,
                    "is_lower_limit": false,
                    "decimal_places": 2
                },
                {
                    "name": "p_astro",
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