RXTE observation of Cygnus X-1: spectra and timing | Zendy

J. Wilms | Zendy; James B. Dove | Zendy; M. A. Nowak | Zendy; Brian Vaughan | Zendy

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RXTE observation of Cygnus X-1: spectra and timing

Author(s) -

J. Wilms,

James B. Dove,

M. A. Nowak,

Brian Vaughan

Publication year - 1997

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.53987

Subject(s) - spectral line , physics , astrophysics , astronomy

We present preliminary results from the analysis of an RXTE observation of Cygnus X-1 in the hard state. We show that the observed X-ray spectrum can be explained with a model for an accretion disk corona, in which a hot sphere is situated inside of a cold accretion disk. Accretion disk corona models with a slab-geometry do not successfully fit the data. We also present the observed temporal properties of Cyg X-1, i.e. the coherence-function and the time-lags, and discuss the constraints these temporal properties impose for the modeled accretion geometry in Cyg X-1.

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