International collaboration doubles number of black hole collisions detected
Published: 26 August 2025
UofG researchers led an international team who analysed the data from the 4th observing run of detectors, with data collected between May 2023 and January 2024. This analysis, presented in ‘GWTC-4.0: Updating the Gravitational-Wave Transient Catalog with Observations from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run’ as a preprint available from the arXiv, more than doubles the number of collisions between black holes & neutron stars reported to date, with 128 new mergers detected