Short term aperiodic variability of X-ray binaries: its origin and implications

Details Short term aperiodic variability of X-ray binaries: its origin and implications Short term aperiodic variability of X-ray binaries: its origin and implications

2008-09-25

arxiv.org/abs/0809.4330v1

Astronomy and Astrophysics

Astrophysics

11 pages, 5 figures. Proceedings article of the conference "Cool Discs, Hot Flows: The Varying Faces of Accreting Compact Obje

Scientific paper

10.1063/1.3002498

In this review I briefly describe the latest advances in studies of aperiodic variability of accreting X-ray binaries and outline the model which currently describe the majority of observational appearances of variability of accreting sources in the best way. Then I concentrate on the case of luminous accreting neutron star binaries (in the soft/high spectral state), where study of variability of X-ray emission of sources allowed us to resolve long standing problem of disentangling the contribution of accretion disk and boundary/spreading layer components to the time average spectrum of sources. The obtained knowledge of the shape of the spectrum of the boundary layer allowed us to make estimates of the mass and radii of accreting neutron stars.

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