2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/138616We present a brief overview of test-bed observations on accreting neutron star binaries for the Simbol-X mission. We show that Simbol-X will provide unique observations able to disclose the physical mechanisms responsible for their high energy emission.Invited talk at the conference "Simbol-X: the Hard X-ray Universe in focus" held in Bologna, 14-16 May 2007 (5 pages, 7 figures)Astrophysicstext