About the identification of accretion disk around black hole in the double system Cyg X-1.

Details About the identification of accretion disk around black hole in the double system Cyg X-1. About the identification of accretion disk around black hole in the double system Cyg X-1.

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998kfnt...14..357s&link_type=abstract

Kinematika Fiz. Nebesn. Tel, Tom 14, No. 4, p. 357 - 361

Physics

Accretion Disks: Black Holes, Accretion Disks: X-Ray Binaries

Scientific paper

The summary light curve of variable star Cyg X-1 on V-electrophotometric observations with 0.5 m reflector of Lviv observatory is constructed. Photometrical period P = 5.6d and amplitude 0.05m are confirmed. At the base analysis of quick (10 - 20 min) light changes in summary light curve of little amplitude (ΔV ≤ 0.1m) in minima the conclusion is made that these changes occur not on the visible star but in accretion disc as flickering in X-rays. The author states that these flashes are only phenomenon for experimental study of accretion disc around black hole Cyg X-1. They permit to identify the number of "stationary" Kepler orbits the accretion disc.

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