What is the source of the PTA GW signal?Ellis, John; Fairbairn, Malcolm; Franciolini, Gabriele; Hütsi, Gert; Iovino, Antonio; Lewicki, Marek; Raidal, Martti; Urrutia Perez, Juan; Vaskonen, Ville; Veermäe, HardiPhysical Review D2024 / art. 023522, 22 p. : ill https://doi.org/10.1103/PhysRevD.109.023522 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS