RXTE Observation of Cygnus X-1: Spectra and Timing

Details RXTE Observation of Cygnus X-1: Spectra and Timing RXTE Observation of Cygnus X-1: Spectra and Timing

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997stin...9924872w&link_type=abstract

Technical Report, Tuebingen Univ. Germany Dept. of Astronomie

Astronomy and Astrophysics

Astronomy

Cygnus Constellation, Accretion Disks, Coronas, Advection, Time Lag, Spheres, X Rays, Spectra

Scientific paper

We present preliminary results from the analysis of an R.XTE observation of Cyg 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 (ADC), in which a hot sphere is situated inside of a cold accretion disk (similar to an advection dominated model). ADC Models with a slab-geometry do not successfully fit the data. In addition to the spectral results we present the observed temporal properties of Cyg X-1, i.e. the coherence-function and the time-lags, and discuss the constraints the. temporal properties imply for the accretion geometry in Cyg X-1.

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