Volume 514 - High Energy Astrophysics in Southern Africa 2025 (HEASA2025) - Multi-Messenger and Extreme Cosmic Frontier
The Gravitational Wave Transient Catalog 4: Overview and Highlights
O. Birnholtz*  on behalf of the LIGO Collaboration, the Virgo Collaboration, the KAGRA Collaboration
*: corresponding author
Full text: pdf
Pre-published on: November 21, 2025
Published on: —
Abstract
The worldwide network of gravitational-wave (GW) detectors, comprised of the Advanced LIGO, Advanced Virgo, and KAGRA detectors has been increasing in sensitivity, range, and hence quantity and quality of detected GW signals from compact binary coalescences.
We present the compact binary signals observed and included in the GW Transient Catalog 4 (GWTC-4), i.e. up to and including the first part of the fourth observing run of the detectors (O4a).
We estimate the source properties, and provide new insight into compact objects in binaries - and to what may lay ahead.
DOI: https://doi.org/10.22323/1.514.0011
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