Dataset Open Access

GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run — Candidate data release

LIGO Scientific Collaboration and Virgo Collaboration and KAGRA Collaboration

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  "description": "<p>This material is part of several data products associated with GWTC-3, the third Gravitational-Wave Transient Catalog from the <a href=\"\">LIGO</a> Scientific Collaboration, the <a href=\"\">Virgo</a> Collaboration, and the <a href=\"\">KAGRA</a> Collaboration. For more information, see the paper (<a href=\"\"></a>), the related material linked from this page, and the GWTC-3 data release documentation (<a href=\"\"></a>).</p>\n\n<p><strong>Candidate data release</strong></p>\n\n<p>Data associated with candidates in GWTC-3. These are gravitational-wave candidates from the&nbsp;the third observing run (O3) of the Advanced LIGO and Advanced Virgo detectors that pass a false alarm rate threshold of 2/day. We upload a tar file (search_data.tar.gz) containing all the data and a python notebook (GWTC3_search_data.ipynb) that provides a description on how to use the files contained in the dataset.</p>\n\n<p>Associated with each candidate are the search analysis results and a localization (assuming that the source is astrophysical). Four search analysis pipelines have been used: the templated-based <a href=\"\">GstLAL</a>, <a href=\"\">MBTA</a> and <a href=\"\">PyCBC</a>, plus the template-free <a href=\"\">cWB</a>. Localizations from the template-based pipelines are calculated using <a href=\"\">Bayestar</a>, while cWB candidates are calculated by cWB itself.</p>\n\n<p>This release is primarily composed of results from the second part of O3 (O3b), but also includes a subset of results&nbsp;from the first part (O3a). A similar release was made for the previous <a href=\"\">GWTC-2.1</a>&nbsp;that&nbsp;contained candidates from the first part of O3 (O3a)&nbsp;from GstLAL, MBTA and PyCBC. We include updated probabilities of astrophysical origin for these candidates: each search analysis has a o3a_pastro directory that contains these results. Since GWTC-2.1 did not include cWB results, this release includes cWB O3a candidates in addition to O3b:&nbsp;the cWB directory contains a subdirectory called o3a_events that contains the O3a results.</p>\n\n<p>The probability of astrophysical origin is calculated assuming a compact binary coalescence source, which may not always be appropriate for&nbsp;the template-free cWB analysis.</p>\n\n<p>&nbsp;&nbsp;</p>\n\n<p>For more general background on gravitational-wave search analysis and sky maps, try the materials from a <a href=\"\">GW Open Data Workshop</a> or the <a href=\"\">guide to LIGO&ndash;Virgo data analysis</a>.</p>", 
  "license": "", 
  "creator": [
      "@type": "Person", 
      "name": "LIGO Scientific Collaboration and Virgo Collaboration and KAGRA Collaboration"
  "url": "", 
  "datePublished": "2021-11-08", 
  "@context": "", 
  "distribution": [
      "contentUrl": "", 
      "encodingFormat": "ipynb", 
      "@type": "DataDownload"
      "contentUrl": "", 
      "encodingFormat": "gz", 
      "@type": "DataDownload"
  "identifier": "", 
  "@id": "", 
  "@type": "Dataset", 
  "name": "GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run \u2014 Candidate data release"
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