Cosmological and High-Energy Physics Implications from Gravitational-Wave Background Searches in LIGO-Virgo-KAGRA’s O1–O4a RunsOctober 22, 2026·LIGO Scientific Collaboration,Virgo Collaboration,KAGRA Collaboration· 0 min read Cite Preprint DOIpublicationLast updated on October 22, 2026 Direct Multimodel Dark Matter Search with Gravitational-Wave Interferometers Using Data from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run September 22, 2026 →