The spectra of accretion discs in low-mass X-ray binaries

Details The spectra of accretion discs in low-mass X-ray binaries The spectra of accretion discs in low-mass X-ray binaries

1995-11-14

arxiv.org/abs/astro-ph/9511059v1

Astronomy and Astrophysics

Astrophysics

6 pages (including figures) uuencoded compressed postscript file. Submitted for publication in Monthly Notices of the Royal As

Scientific paper

We present self-consistent models for the radiative transfer in Shakura-Sunyaev accretion discs in bright low-mass X-ray binaries (LMXB). Our calculations include the full effects of incoherent Compton scattering and the vertical temperature structure within the disc, as well as the effects of Doppler blurring and gravitational redshift. We find that the observed X-ray spectra are well fit by exponentially cutoff power-law models. The difference between the observed total spectrum and our calculated disc spectrum should reveal the spectrum of the disc/neutron star boundary layer and other emitting regions considered to be present in LMXB.

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