Directional search for persistent gravitational waves: Results from the first part of LIGO-Virgo-KAGRA’s fourth observing runJuly 6, 2026·LIGO Scientific Collaboration,Virgo Collaboration,KAGRA Collaboration· 0 min read Cite Preprint DOIpublicationLast updated on July 6, 2026 ← Search for planetary-mass ultracompact binaries using data from the first part of the LIGO–Virgo–KAGRA fourth observing run July 24, 2026Multivariate Bayesian P-spline estimation of spectral density matrices, with application to LISA TDI noise July 6, 2026 →