Event Version Parameter List
Return the full list of all parameter estimations from all pipelines for an event version.
GET /api/v2/event-versions/GW230529_181500-v3/parameters?format=api
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"description": "na", "date_added": "2026-05-20", "data_url": "https://zenodo.org/api/records/20275769/files/IGWN-GWTC4p1-18965dda8_5-GW230529_181500-combined_PEDataRelease.hdf5/content", "pipeline": "GWTC-4.1_GW230529_181500_C00:IMRPhenomNSBH_OO1_PE", "pipeline_type": "pe", "waveform_family": "C00:IMRPhenomNSBH", "is_preferred": false, "links": [ { "url": "https://doi.org/10.5281/zenodo.20275769", "label": "na", "description": "Zenodo record for additional PE data products" } ], "parameters": [ { "name": "chi_eff", "unit": "", "description": "na", "best": -0.05, "upper_error": 0.14, "lower_error": -0.15, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 1.94, "upper_error": 0.04, "lower_error": -0.04, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 5.04, "upper_error": 0.81, "lower_error": -0.62, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 200.0, "upper_error": 110.0, "lower_error": -100.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 0 }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 3.82, "upper_error": 1.02, "lower_error": -0.99, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 1.37, "upper_error": 0.41, "lower_error": -0.24, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "redshift", "unit": "", "description": "na", "best": 0.04, "upper_error": 0.02, "lower_error": -0.02, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 5.19, "upper_error": 0.79, "lower_error": -0.6, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 } ] }, { "name": "GWTC-4.1_GW230529_181500_C00:IMRPhenomPv2_NRTidalv2_OO2_PE", "description": "na", "date_added": "2026-05-20", "data_url": "https://zenodo.org/api/records/20275769/files/IGWN-GWTC4p1-18965dda8_5-GW230529_181500-combined_PEDataRelease.hdf5/content", "pipeline": "GWTC-4.1_GW230529_181500_C00:IMRPhenomPv2_NRTidalv2_OO2_PE", "pipeline_type": "pe", "waveform_family": "C00:IMRPhenomPv2_NRTidalv2", "is_preferred": false, "links": [ { "url": "https://doi.org/10.5281/zenodo.20275769", "label": "na", "description": "Zenodo record for additional PE data products" } ], "parameters": [ { "name": "chi_eff", "unit": "", "description": "na", "best": -0.11, "upper_error": 0.13, "lower_error": -0.11, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 1.94, "upper_error": 0.04, "lower_error": -0.04, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 198.0, "upper_error": 110.0, "lower_error": -100.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 0 }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 3.3, "upper_error": 1.0, "lower_error": -1.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 1 }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 1.52, "upper_error": 0.6, "lower_error": -0.29, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "redshift", "unit": "", "description": "na", "best": 0.04, "upper_error": 0.02, "lower_error": -0.02, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 4.87, "upper_error": 0.73, "lower_error": -0.43, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 } ] }, { "name": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXAS:HighSpin_OO3_PE", "description": "na", "date_added": "2026-05-20", "data_url": "https://zenodo.org/api/records/20275769/files/IGWN-GWTC4p1-18965dda8_5-GW230529_181500-combined_PEDataRelease.hdf5/content", "pipeline": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXAS:HighSpin_OO3_PE", "pipeline_type": "pe", "waveform_family": "C00:IMRPhenomXAS:HighSpin", "is_preferred": false, "links": [ { "url": "https://doi.org/10.5281/zenodo.20275769", "label": "na", "description": "Zenodo record for additional PE data products" } ], "parameters": [ { "name": "chi_eff", "unit": "", "description": "na", "best": -0.12, "upper_error": 0.22, "lower_error": -0.16, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 1.94, "upper_error": 0.04, "lower_error": -0.04, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 4.79, "upper_error": 1.14, "lower_error": -0.53, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 200.0, "upper_error": 120.0, "lower_error": -110.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 0 }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 3.5, "upper_error": 1.5, "lower_error": -1.1, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 1 }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 1.48, "upper_error": 0.6, "lower_error": -0.37, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "redshift", "unit": "", "description": "na", "best": 0.04, "upper_error": 0.02, "lower_error": -0.02, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 4.95, "upper_error": 1.12, "lower_error": -0.51, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 } ] }, { "name": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXAS:LowSpinSecondary_OO4_PE", "description": "na", "date_added": "2026-05-20", "data_url": "https://zenodo.org/api/records/20275769/files/IGWN-GWTC4p1-18965dda8_5-GW230529_181500-combined_PEDataRelease.hdf5/content", "pipeline": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXAS:LowSpinSecondary_OO4_PE", "pipeline_type": "pe", "waveform_family": "C00:IMRPhenomXAS:LowSpinSecondary", "is_preferred": false, "links": [ { "url": "https://doi.org/10.5281/zenodo.20275769", "label": "na", "description": "Zenodo record for additional PE data products" } ], "parameters": [ { "name": "chi_eff", "unit": "", "description": "na", "best": -0.04, "upper_error": 0.14, "lower_error": -0.16, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 1.94, "upper_error": 0.04, "lower_error": -0.04, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 5.11, "upper_error": 0.82, "lower_error": -0.64, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 200.0, "upper_error": 120.0, "lower_error": -100.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 0 }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 3.93, "upper_error": 1.0, "lower_error": -0.98, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 1.34, "upper_error": 0.37, "lower_error": -0.23, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "redshift", "unit": "", "description": "na", "best": 0.04, "upper_error": 0.02, "lower_error": -0.02, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 5.26, "upper_error": 0.8, "lower_error": -0.61, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 } ] }, { "name": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXHM_OO5_PE", "description": "na", "date_added": "2026-05-20", "data_url": "https://zenodo.org/api/records/20275769/files/IGWN-GWTC4p1-18965dda8_5-GW230529_181500-combined_PEDataRelease.hdf5/content", "pipeline": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXHM_OO5_PE", "pipeline_type": "pe", "waveform_family": "C00:IMRPhenomXHM", "is_preferred": false, "links": [ { "url": "https://doi.org/10.5281/zenodo.20275769", "label": "na", "description": "Zenodo record for additional PE data products" } ], "parameters": [ { "name": "chi_eff", "unit": "", "description": "na", "best": -0.13, "upper_error": 0.22, "lower_error": -0.14, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 1.93, "upper_error": 0.05, "lower_error": -0.04, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "final_mass_source", "unit": "M_sun", "description": "na", "best": 4.75, "upper_error": 1.04, "lower_error": -0.48, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 220.0, "upper_error": 110.0, "lower_error": -110.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 0 }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 3.4, "upper_error": 1.4, "lower_error": -1.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 1 }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 1.5, "upper_error": 0.59, "lower_error": -0.36, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "redshift", "unit": "", "description": "na", "best": 0.05, "upper_error": 0.02, "lower_error": -0.02, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 4.91, "upper_error": 1.01, "lower_error": -0.46, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 } ] }, { "name": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXP_OO6_PE", "description": "na", "date_added": "2026-05-20", "data_url": "https://zenodo.org/api/records/20275769/files/IGWN-GWTC4p1-18965dda8_5-GW230529_181500-combined_PEDataRelease.hdf5/content", "pipeline": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXP_OO6_PE", "pipeline_type": "pe", "waveform_family": "C00:IMRPhenomXP", "is_preferred": false, "links": [ { "url": "https://doi.org/10.5281/zenodo.20275769", "label": "na", "description": "Zenodo record for additional PE data products" } ], "parameters": [ { "name": "chi_eff", "unit": "", "description": "na", "best": -0.1, "upper_error": 0.16, "lower_error": -0.17, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 1.94, "upper_error": 0.04, "lower_error": -0.04, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 199.0, "upper_error": 106.0, "lower_error": -98.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 0 }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 3.6, "upper_error": 1.0, "lower_error": -1.2, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 1 }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 1.44, "upper_error": 0.57, "lower_error": -0.27, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "redshift", "unit": "", "description": "na", "best": 0.04, "upper_error": 0.02, "lower_error": -0.02, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 5.06, "upper_error": 0.76, "lower_error": -0.58, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 } ] }, { "name": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXPHM:HighSpin_OO7_PE", "description": "na", "date_added": "2026-05-20", "data_url": "https://zenodo.org/api/records/20275769/files/IGWN-GWTC4p1-18965dda8_5-GW230529_181500-combined_PEDataRelease.hdf5/content", "pipeline": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXPHM:HighSpin_OO7_PE", "pipeline_type": "pe", "waveform_family": "C00:IMRPhenomXPHM:HighSpin", "is_preferred": false, "links": [ { "url": "https://doi.org/10.5281/zenodo.20275769", "label": "na", "description": "Zenodo record for additional PE data products" } ], "parameters": [ { "name": "chi_eff", "unit": "", "description": "na", "best": -0.11, "upper_error": 0.13, "lower_error": -0.16, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 1.94, "upper_error": 0.04, "lower_error": -0.04, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 206.0, "upper_error": 100.0, "lower_error": -98.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 0 }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 3.55, "upper_error": 0.86, "lower_error": -1.16, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 1.46, "upper_error": 0.61, "lower_error": -0.25, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "redshift", "unit": "", "description": "na", "best": 0.05, "upper_error": 0.02, "lower_error": -0.02, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 5.0, "upper_error": 0.62, "lower_error": -0.55, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 } ] }, { "name": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXPHM:LowSpin_OO8_PE", "description": "na", "date_added": "2026-05-20", "data_url": "https://zenodo.org/api/records/20275769/files/IGWN-GWTC4p1-18965dda8_5-GW230529_181500-combined_PEDataRelease.hdf5/content", "pipeline": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXPHM:LowSpin_OO8_PE", "pipeline_type": "pe", "waveform_family": "C00:IMRPhenomXPHM:LowSpin", "is_preferred": false, "links": [ { "url": "https://doi.org/10.5281/zenodo.20275769", "label": "na", "description": "Zenodo record for additional PE data products" } ], "parameters": [ { "name": "chirp_mass_source", "unit": "M_sun", "description": "na", "best": 1.94, "upper_error": 0.04, "lower_error": -0.04, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "luminosity_distance", "unit": "Mpc", "description": "na", "best": 220.0, "upper_error": 110.0, "lower_error": -110.0, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 0 }, { "name": "mass_1_source", "unit": "M_sun", "description": "na", "best": 4.17, "upper_error": 0.2, "lower_error": -0.18, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "mass_2_source", "unit": "M_sun", "description": "na", "best": 1.27, "upper_error": 0.05, "lower_error": -0.05, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "redshift", "unit": "", "description": "na", "best": 0.05, "upper_error": 0.02, "lower_error": -0.02, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "total_mass_source", "unit": "M_sun", "description": "na", "best": 5.44, "upper_error": 0.18, "lower_error": -0.17, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 } ] }, { "name": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXPHM:LowSpinSecondary_OO9_PE", "description": "na", "date_added": "2026-05-20", "data_url": "https://zenodo.org/api/records/20275769/files/IGWN-GWTC4p1-18965dda8_5-GW230529_181500-combined_PEDataRelease.hdf5/content", "pipeline": "GWTC-4.1_GW230529_181500_C00:IMRPhenomXPHM:LowSpinSecondary_OO9_PE", "pipeline_type": "pe", "waveform_family": "C00:IMRPhenomXPHM:LowSpinSecondary", "is_preferred": false, "links": [ { "url": "https://doi.org/10.5281/zenodo.20275769", "label": "na", "description": "Zenodo record for additional PE data products" } ], "parameters": [ { "name": "chi_eff", "unit": "", "description": "na", "best": -0.11, "upper_error": 0.11, "lower_error": -0.16, "is_upper_limit": false, "is_lower_limit": false, "decimal_places": 2 }, { "name": "chirp_mass_source", "unit": "M_sun", "description": 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