{
  "events": {
    "GW190421_213856-v1": {
      "commonName": "GW190421_213856",
      "version": 1,
      "catalog.shortName": "GWTC-2",
      "GPS": 1239917954.3,
      "gracedb_id": "S190421ar",
      "reference": "/GWTC-2/",
      "jsonurl": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1",
      "mass_1_source": 41.3,
      "mass_1_source_lower": -6.9,
      "mass_1_source_upper": 10.4,
      "mass_1_source_unit": "M_sun",
      "mass_2_source": 31.9,
      "mass_2_source_lower": -8.8,
      "mass_2_source_upper": 8.0,
      "mass_2_source_unit": "M_sun",
      "network_matched_filter_snr": 10.55069569549375,
      "network_matched_filter_snr_lower": null,
      "network_matched_filter_snr_upper": null,
      "network_matched_filter_snr_unit": "",
      "luminosity_distance": 2880.0,
      "luminosity_distance_lower": -1380.0,
      "luminosity_distance_upper": 1370.0,
      "luminosity_distance_unit": "Mpc",
      "chi_eff": -0.06,
      "chi_eff_lower": -0.27,
      "chi_eff_upper": 0.22,
      "chi_eff_unit": "",
      "total_mass_source": 72.9,
      "total_mass_source_lower": -9.2,
      "total_mass_source_upper": 13.4,
      "total_mass_source_unit": "M_sun",
      "chirp_mass_source": 31.2,
      "chirp_mass_source_lower": -4.2,
      "chirp_mass_source_upper": 5.9,
      "chirp_mass_source_unit": "M_sun",
      "chirp_mass": 46.6,
      "chirp_mass_lower": -6.0,
      "chirp_mass_upper": 6.6,
      "chirp_mass_unit": "M_sun",
      "redshift": 0.49,
      "redshift_lower": -0.21,
      "redshift_upper": 0.19,
      "redshift_unit": "",
      "far": 0.0007738314255311893,
      "far_lower": null,
      "far_upper": null,
      "far_unit": "1/yr",
      "p_astro": 0.999768,
      "p_astro_lower": null,
      "p_astro_upper": null,
      "p_astro_unit": "",
      "final_mass_source": 69.7,
      "final_mass_source_lower": -8.7,
      "final_mass_source_upper": 12.5,
      "final_mass_source_unit": "M_sun",
      "strain": [
        {
          "GPSstart": 1239917939,
          "detector": "H1",
          "sampling_rate": 16384,
          "duration": 32,
          "format": "gwf",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_16KHZ_R1-1239917939-32.gwf"
        },
        {
          "GPSstart": 1239917939,
          "detector": "H1",
          "sampling_rate": 16384,
          "duration": 32,
          "format": "hdf5",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_16KHZ_R1-1239917939-32.hdf5"
        },
        {
          "GPSstart": 1239917939,
          "detector": "H1",
          "sampling_rate": 16384,
          "duration": 32,
          "format": "txt",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_16KHZ_R1-1239917939-32.txt.gz"
        },
        {
          "GPSstart": 1239917939,
          "detector": "H1",
          "sampling_rate": 4096,
          "duration": 32,
          "format": "gwf",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_4KHZ_R1-1239917939-32.gwf"
        },
        {
          "GPSstart": 1239917939,
          "detector": "H1",
          "sampling_rate": 4096,
          "duration": 32,
          "format": "hdf5",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_4KHZ_R1-1239917939-32.hdf5"
        },
        {
          "GPSstart": 1239917939,
          "detector": "H1",
          "sampling_rate": 4096,
          "duration": 32,
          "format": "txt",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_4KHZ_R1-1239917939-32.txt.gz"
        },
        {
          "GPSstart": 1239915907,
          "detector": "H1",
          "sampling_rate": 16384,
          "duration": 4096,
          "format": "gwf",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_16KHZ_R1-1239915907-4096.gwf"
        },
        {
          "GPSstart": 1239915907,
          "detector": "H1",
          "sampling_rate": 16384,
          "duration": 4096,
          "format": "hdf5",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_16KHZ_R1-1239915907-4096.hdf5"
        },
        {
          "GPSstart": 1239915907,
          "detector": "H1",
          "sampling_rate": 16384,
          "duration": 4096,
          "format": "txt",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_16KHZ_R1-1239915907-4096.txt.gz"
        },
        {
          "GPSstart": 1239915907,
          "detector": "H1",
          "sampling_rate": 4096,
          "duration": 4096,
          "format": "gwf",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_4KHZ_R1-1239915907-4096.gwf"
        },
        {
          "GPSstart": 1239915907,
          "detector": "H1",
          "sampling_rate": 4096,
          "duration": 4096,
          "format": "hdf5",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_4KHZ_R1-1239915907-4096.hdf5"
        },
        {
          "GPSstart": 1239915907,
          "detector": "H1",
          "sampling_rate": 4096,
          "duration": 4096,
          "format": "txt",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/H-H1_GWOSC_4KHZ_R1-1239915907-4096.txt.gz"
        },
        {
          "GPSstart": 1239917939,
          "detector": "L1",
          "sampling_rate": 16384,
          "duration": 32,
          "format": "gwf",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_16KHZ_R1-1239917939-32.gwf"
        },
        {
          "GPSstart": 1239917939,
          "detector": "L1",
          "sampling_rate": 16384,
          "duration": 32,
          "format": "hdf5",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_16KHZ_R1-1239917939-32.hdf5"
        },
        {
          "GPSstart": 1239917939,
          "detector": "L1",
          "sampling_rate": 16384,
          "duration": 32,
          "format": "txt",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_16KHZ_R1-1239917939-32.txt.gz"
        },
        {
          "GPSstart": 1239917939,
          "detector": "L1",
          "sampling_rate": 4096,
          "duration": 32,
          "format": "gwf",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_4KHZ_R1-1239917939-32.gwf"
        },
        {
          "GPSstart": 1239917939,
          "detector": "L1",
          "sampling_rate": 4096,
          "duration": 32,
          "format": "hdf5",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_4KHZ_R1-1239917939-32.hdf5"
        },
        {
          "GPSstart": 1239917939,
          "detector": "L1",
          "sampling_rate": 4096,
          "duration": 32,
          "format": "txt",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_4KHZ_R1-1239917939-32.txt.gz"
        },
        {
          "GPSstart": 1239915907,
          "detector": "L1",
          "sampling_rate": 16384,
          "duration": 4096,
          "format": "gwf",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_16KHZ_R1-1239915907-4096.gwf"
        },
        {
          "GPSstart": 1239915907,
          "detector": "L1",
          "sampling_rate": 16384,
          "duration": 4096,
          "format": "hdf5",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_16KHZ_R1-1239915907-4096.hdf5"
        },
        {
          "GPSstart": 1239915907,
          "detector": "L1",
          "sampling_rate": 16384,
          "duration": 4096,
          "format": "txt",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_16KHZ_R1-1239915907-4096.txt.gz"
        },
        {
          "GPSstart": 1239915907,
          "detector": "L1",
          "sampling_rate": 4096,
          "duration": 4096,
          "format": "gwf",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_4KHZ_R1-1239915907-4096.gwf"
        },
        {
          "GPSstart": 1239915907,
          "detector": "L1",
          "sampling_rate": 4096,
          "duration": 4096,
          "format": "hdf5",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_4KHZ_R1-1239915907-4096.hdf5"
        },
        {
          "GPSstart": 1239915907,
          "detector": "L1",
          "sampling_rate": 4096,
          "duration": 4096,
          "format": "txt",
          "url": "https://gwosc.org/eventapi/json/GWTC-2/GW190421_213856/v1/L-L1_GWOSC_4KHZ_R1-1239915907-4096.txt.gz"
        }
      ],
      "parameters": {
        "GWTC2_BayesWave_Waveform_GW190421_213856": {
          "waveform_family": "na",
          "data_url": "https://git.ligo.org/sudarshan-ghonge/o3a-waveform-reconstructions",
          "date_added": "2021-03-09",
          "is_preferred": false,
          "pipeline_type": "pe",
          "links": {}
        },
        "gwtc2_cwb_allsky_GW190421_213856": {
          "waveform_family": "na",
          "data_url": "",
          "date_added": "2020-10-15",
          "is_preferred": false,
          "pipeline_type": "search",
          "links": {},
          "far": 0.301736872,
          "far_lower": null,
          "far_upper": null,
          "far_unit": "1/yr",
          "far_meta": "na",
          "network_matched_filter_snr": 9.261751994088376,
          "network_matched_filter_snr_lower": null,
          "network_matched_filter_snr_upper": null,
          "network_matched_filter_snr_unit": "",
          "network_matched_filter_snr_meta": "na"
        },
        "GWTC2_cWB_Waveform_GW190421_213856": {
          "waveform_family": "na",
          "data_url": "https://gitlab.com/gwburst/public/analysis/gwtc2-waveform-reconstructions/-/tree/public/events/S190421ar/data",
          "date_added": "2021-03-09",
          "is_preferred": false,
          "pipeline_type": "pe",
          "links": {
            "doc-4": "https://gwburst.gitlab.io/public/analysis/gwtc2-waveform-reconstructions/events/S190421ar/report/all/index.html",
            "doc-5": "https://gwburst.gitlab.io/info/gwtc_2_catalog_gwosc/",
            "doc-1": "https://gitlab.com/gwburst/public/analysis/gwtc2-waveform-reconstructions/-/blob/public/README.md"
          }
        },
        "gwtc2_gstlal_allsky_GW190421_213856": {
          "waveform_family": "na",
          "data_url": "",
          "date_added": "2020-10-15",
          "is_preferred": false,
          "pipeline_type": "search",
          "links": {},
          "far": 0.0007738314255311893,
          "far_lower": null,
          "far_upper": null,
          "far_unit": "1/yr",
          "far_meta": "na",
          "network_matched_filter_snr": 10.55069569549375,
          "network_matched_filter_snr_lower": null,
          "network_matched_filter_snr_upper": null,
          "network_matched_filter_snr_unit": "",
          "network_matched_filter_snr_meta": "na",
          "p_astro": 0.999768,
          "p_astro_lower": null,
          "p_astro_upper": null,
          "p_astro_unit": "",
          "p_astro_meta": "na"
        },
        "gwtc2_pe_7GW190421_213856": {
          "waveform_family": "PublicationSamples",
          "data_url": "https://dcc.ligo.org/public/0169/P2000223/007/GW190421_213856.tar",
          "date_added": "2021-03-09",
          "is_preferred": true,
          "pipeline_type": "pe",
          "links": {
            "posterior-samples": "https://dcc.ligo.org/LIGO-P2000223/public",
            "skymap": "https://dcc.ligo.org/public/0169/P2000223/007/all_skymaps.tar"
          },
          "chirp_mass": 46.6,
          "chirp_mass_lower": -6.0,
          "chirp_mass_upper": 6.6,
          "chirp_mass_unit": "M_sun",
          "chirp_mass_meta": "na",
          "chirp_mass_source": 31.2,
          "chirp_mass_source_lower": -4.2,
          "chirp_mass_source_upper": 5.9,
          "chirp_mass_source_unit": "M_sun",
          "chirp_mass_source_meta": "na",
          "chi_eff": -0.06,
          "chi_eff_lower": -0.27,
          "chi_eff_upper": 0.22,
          "chi_eff_unit": "",
          "chi_eff_meta": "na",
          "final_mass_source": 69.7,
          "final_mass_source_lower": -8.7,
          "final_mass_source_upper": 12.5,
          "final_mass_source_unit": "M_sun",
          "final_mass_source_meta": "na",
          "luminosity_distance": 2880.0,
          "luminosity_distance_lower": -1380.0,
          "luminosity_distance_upper": 1370.0,
          "luminosity_distance_unit": "Mpc",
          "luminosity_distance_meta": "na",
          "mass_1_source": 41.3,
          "mass_1_source_lower": -6.9,
          "mass_1_source_upper": 10.4,
          "mass_1_source_unit": "M_sun",
          "mass_1_source_meta": "na",
          "mass_2_source": 31.9,
          "mass_2_source_lower": -8.8,
          "mass_2_source_upper": 8.0,
          "mass_2_source_unit": "M_sun",
          "mass_2_source_meta": "na",
          "redshift": 0.49,
          "redshift_lower": -0.21,
          "redshift_upper": 0.19,
          "redshift_unit": "",
          "redshift_meta": "na",
          "total_mass_source": 72.9,
          "total_mass_source_lower": -9.2,
          "total_mass_source_upper": 13.4,
          "total_mass_source_unit": "M_sun",
          "total_mass_source_meta": "na"
        },
        "gwtc2_pe_GW190421_213856": {
          "waveform_family": "PublicationSamples",
          "data_url": "https://dcc.ligo.org/public/0169/P2000223/005/GW190421_213856.tar",
          "date_added": "2020-10-23",
          "is_preferred": false,
          "pipeline_type": "pe",
          "links": {
            "posterior-samples": "https://dcc.ligo.org/LIGO-P2000223/public",
            "skymap": "https://dcc.ligo.org/public/0169/P2000223/005/all_skymaps.tar"
          },
          "chirp_mass": 47.0,
          "chirp_mass_lower": -6.0,
          "chirp_mass_upper": 6.8,
          "chirp_mass_unit": "M_sun",
          "chirp_mass_meta": "na",
          "chirp_mass_source": 30.7,
          "chirp_mass_source_lower": -3.9,
          "chirp_mass_source_upper": 5.5,
          "chirp_mass_source_unit": "M_sun",
          "chirp_mass_source_meta": "na",
          "chi_eff": -0.05,
          "chi_eff_lower": -0.26,
          "chi_eff_upper": 0.23,
          "chi_eff_unit": "",
          "chi_eff_meta": "na",
          "final_mass_source": 68.6,
          "final_mass_source_lower": -8.1,
          "final_mass_source_upper": 11.7,
          "final_mass_source_unit": "M_sun",
          "final_mass_source_meta": "na",
          "luminosity_distance": 3150.0,
          "luminosity_distance_lower": -1420.0,
          "luminosity_distance_upper": 1370.0,
          "luminosity_distance_unit": "Mpc",
          "luminosity_distance_meta": "na",
          "mass_1_source": 40.6,
          "mass_1_source_lower": -6.6,
          "mass_1_source_upper": 10.4,
          "mass_1_source_unit": "M_sun",
          "mass_1_source_meta": "na",
          "mass_2_source": 31.4,
          "mass_2_source_lower": -8.2,
          "mass_2_source_upper": 7.5,
          "mass_2_source_unit": "M_sun",
          "mass_2_source_meta": "na",
          "redshift": 0.53,
          "redshift_lower": -0.21,
          "redshift_upper": 0.18,
          "redshift_unit": "",
          "redshift_meta": "na",
          "total_mass_source": 71.8,
          "total_mass_source_lower": -8.6,
          "total_mass_source_upper": 12.5,
          "total_mass_source_unit": "M_sun",
          "total_mass_source_meta": "na"
        },
        "gwtc2_pycbc_allsky_GW190421_213856": {
          "waveform_family": "na",
          "data_url": "",
          "date_added": "2020-10-15",
          "is_preferred": false,
          "pipeline_type": "search",
          "links": {},
          "far": 1.896848494434834,
          "far_lower": null,
          "far_upper": null,
          "far_unit": "1/yr",
          "far_meta": "na",
          "network_matched_filter_snr": 10.15602367663309,
          "network_matched_filter_snr_lower": null,
          "network_matched_filter_snr_upper": null,
          "network_matched_filter_snr_unit": "",
          "network_matched_filter_snr_meta": "na",
          "p_astro": 0.88743,
          "p_astro_lower": null,
          "p_astro_upper": null,
          "p_astro_unit": "",
          "p_astro_meta": "na"
        },
        "gwtc2_pycbc_highmass_GW190421_213856": {
          "waveform_family": "na",
          "data_url": "",
          "date_added": "2020-10-15",
          "is_preferred": false,
          "pipeline_type": "search",
          "links": {},
          "far": 0.006552545298318635,
          "far_lower": null,
          "far_upper": null,
          "far_unit": "1/yr",
          "far_meta": "na",
          "network_matched_filter_snr": 10.15601040387993,
          "network_matched_filter_snr_lower": null,
          "network_matched_filter_snr_upper": null,
          "network_matched_filter_snr_unit": "",
          "network_matched_filter_snr_meta": "na",
          "p_astro": 0.99896,
          "p_astro_lower": null,
          "p_astro_upper": null,
          "p_astro_unit": "",
          "p_astro_meta": "na"
        }
      }
    }
  }
}