Interpretation of the light curves of X-ray binaries - The Cygnus X-1 system

Details Interpretation of the light curves of X-ray binaries - The Cygnus X-1 system Interpretation of the light curves of X-ray binaries - The Cygnus X-1 system

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981sva....25...38b&link_type=abstract

(Astronomicheskii Zhurnal, vol. 58, Jan.-Feb. 1981, p. 67-79.) Soviet Astronomy, vol. 25, Jan.-Feb. 1981, p. 38-44. Translation

Astronomy and Astrophysics

Astronomy

3

Binary Stars, Light Curve, X Ray Binaries, X Ray Sources, Optical Reflection, Roche Limit, Stellar Gravitation, Stellar Models, Ultraviolet Astronomy

Scientific paper

The paper develops an algorithm for solving the inverse problem of the interpretation of the light curve of an X-ray binary system in the Roche model approximation, with allowance for the ellipsoidality of the optical component and for its heating by X-rays from the compact object. The algorithm is applied to high-precision mean UBV light curves of the Cyg X-1 system, and reliable estimates of the physical parameters are obtained. It is noted, however, that the 1600-A UV light curve of Cyg X-1 cannot be represented by the Roche model if only the ellipsoidality and reflection effects are taken into account.

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