Data Centre for Astrophysics
Astronomy Department of the University of Geneva
ISDC Seminar

Thursday, July 6, 2000 at 11:00

Katja Pottschmidt

Monitoring Cygnus X-1 with RXTE

Abstract. I present more than two years of RXTE monitoring observations of Cyg X-1 with emphasis on the evolution of the short-term variability (power spectral densities, time lags, coherence functions). Even though Cyg X-1 is the best studied stellar black hole candidate and the prime example for displaying the canonical black hole hard statem a detailed monitoring of this state has obly become possible with RXTE. Correlations of spectral and temporal parameters in this state as well as correlated behavior at radio wavelengths will be shown and discussed in the light of different accretion models.

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