The broadened iron lines observed from accreting compact objects are most easily interpreted in terms of reflection onto the accretion disc of the hard X-ray photons emitted by the central source. In this context, such a broadness is due to the relativistic motion of the reflecting plasma, in the deep gravitational well of the compact object, and can thus serve as a probe of the inner radius of the disc. Here we report about the discovery of such features from a couple of accreting millisecond pulsars, and discuss the constraints which can be derived on the magnetospheric radius.
|Titolo della pubblicazione ospite||International Conference on Binaries: In Celebration of Ron Webbink's 65th Birthday|
|Numero di pagine||2|
|Stato di pubblicazione||Published - 2010|
|Nome||AIP CONFERENCE PROCEEDINGS|