GWTC-4.0 : an introduction to version 4.0 of the Gravitational-Wave Transient Catalog

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Abac, A. G. and Armstrong, S. and Ben Yaala, M. and Craig, K. and Fazio, M. and Gier, C. and Reid, S. and Wallace, G. S., The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration (2025) GWTC-4.0 : an introduction to version 4.0 of the Gravitational-Wave Transient Catalog. Astrophysical Journal Letters, 995 (1). ISSN 2041-8213 (https://doi.org/10.3847/2041-8213/ae0c06)

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Abstract

The Gravitational-Wave Transient Catalog (GWTC) is a collection of short-duration (transient) gravitational-wave signals identified by the LIGO–Virgo–KAGRA Collaboration in gravitational-wave data produced by the eponymous detectors. The catalog provides information about the identified candidates, such as the arrival time and amplitude of the signal and properties of the signal’s source as inferred from the observational data. GWTC is the data release of this dataset, and version 4.0 extends the catalog to include observations made during the first part of the fourth LIGO–Virgo–KAGRA observing run up until 2024 January 31. This Letter marks an introduction to a collection of articles related to this version of the catalog, GWTC-4.0. The collection of articles accompanying the catalog provides documentation of the methods used to analyze the data, summaries of the catalog of events, observational measurements drawn from the population, and detailed discussions of selected candidates.

ORCID iDs

Abac, A. G., Armstrong, S., Ben Yaala, M. ORCID logoORCID: https://orcid.org/0000-0002-6754-0875, Craig, K., Fazio, M. ORCID logoORCID: https://orcid.org/0000-0002-9057-9663, Gier, C. ORCID logoORCID: https://orcid.org/0000-0003-0897-7943, Reid, S. and Wallace, G. S.;
CORE (COnnecting REpositories)