Correlation between BATSE Hard X-Ray Spectral and Timing Properties of Cygnus X-1
- 10 May 1996
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 462 (2)
- https://doi.org/10.1086/310039
Abstract
We have analyzed approximately 1100 days of Cygnus X-1 hard X-ray data obtained with BATSE to study its rapid variability. We find for the first time correlations between the slope of the spectrum and the hard X-ray intensity, and between the spectral slope and the amplitude of the rapid variations of the hard X-ray flux. We compare our results with expectations from current theories of accretion onto black holes.Comment: 17 pages, 3 Postscript figures, uses aasms4.sty. Accepted for publication in Astrophysical Journal LetterKeywords
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