Tiziana Di Salvo30 min

Probing the inner regions of NS systems

I will review the "state of the art" of X-ray spectroscopy at the iron line energies in weakly magnetic neutron stars and accreting millisecond pulsars. These features are thought to be produced by reflection of the primary Comptonized spectrum on the inner accretion disk. These features, if confirmed with high statistical significance, may provide invaluable information on the physical properties of the accretion flow at a few tens of kilometers from the compact object. I will briefly mention the future prospects of X-ray spectroscopy and observations of broad iron lines.