Consistency of JWST black hole observations with NANOGrav gravitational wave measurements John Ellis, Malcolm Fairbairn, Gert Hütsi, Juan Urrutia, Ville Vaskonen and Hardi Veermäe A&A, 691 (2024) A270 Published online: 15 November 2024 DOI: 10.1051/0004-6361/202450846