Dacheng Lin (IRAP Toulouse, France)

Study of Neutron-Star Low-mass X-ray Binaries with LOFT

Studies of X-ray binaries can achieve the best results by combining timing and spectral information. LOFT
will make such studies unprecedentedly effectively, with its capability to observe bright X-ray sources at high
timing and spectral resolutions, large effective area, and broad energy band pass. We show that LOFT can
obtain the relation of the kilo-Hertz qausi-periodic oscillation vs. the inner disk radius, from both the
relativistic Fe line and the disk continuum emission, in neutron-star low-mass X-ray binaries. This relation is
critical for understanding the origin of kHz QPOs and the model for the equation of state of the dense matter.