Evidence of the pair-instability gap from black-hole masses
1 April 2026 at 08:00
Nature, Published online: 01 April 2026; doi:10.1038/s41586-026-10359-0
LIGOβVirgoβKAGRAβs fourth Gravitational-Wave Transient Catalog shows evidence of a clear pair-instability gap in the distribution of binary black-hole secondary masses but is absent in the larger primary masses.