Long Term Variability of Cyg X-1 I. X-ray spectral-temporal correlations in the hard state

K. Pottschmidt, J. Wilms, M. A. Nowak +6

We present the long term evolution of the timing properties of the black hole candidate Cygnus X-1 in the 0.002-128 Hz frequency range as monitored from 1998 to 2001 with the RXTE.…