Reprocessing of X rays in low-mass X-ray binaries.

Details Reprocessing of X rays in low-mass X-ray binaries. Reprocessing of X rays in low-mass X-ray binaries.

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...314..484d&link_type=abstract

Astronomy and Astrophysics, v.314, p.484-490

Astronomy and Astrophysics

Astrophysics

69

X-Rays: Stars, Accretion

Scientific paper

We have applied a simple geometric model for the reprocessing of X rays in low-mass X-ray binaries to estimate their absolute visual magnitudes, and the amplitudes of their optical light curves. A comparison with the observed values for these quantities leads to an X-ray albedo in excess of 0.9, i.e., only a small fraction of the X rays incident on the accretion disk are absorbed and transformed into lower-energy photons. We derive an opening (semi-) angle of the disk, as seen from the X-ray source, of ~12deg.

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