LIGO VIRGO AND KAGRA RELEASE FURTHER SCIENCE RESULTS FROM NEW GRAVITATIONAL-WAVE CATALOG

13 Nov 2021 — Coinciding with release of the GWTC-3 catalog of 90 gravitational-wave events, the LIGO-Virgo-KAGRA Collaboration has submitted three companion papers presenting new results that are enabled by our new catalog. The first paper explores what we can learn from GWTC-3 about the population of black holes and neutron stars, and how properties like their masses and spins can help us understand how they formed. The second paper uses gravitational-wave sources to obtain a new and significantly improved estimate of the Hubble constant, which measures how fast the universe is expanding. The third paper presents the results of searches for weak gravitational-wave signals that might be associated with gamma-ray bursts. All three papers are listed on the arXiv. A science summary for each paper and other resources can be found on the O3b Catalog page.