Integral observation of Cyg X-1 in an intermediate state
  We present preliminary results of an observation of Cygnus X-1 with INTEGRAL performed on June 7-11 2003.   Both spectral and variability properties of the source indicate that Cygnus X-1 was in an intermediate state. As expected during state transitions, we find an anticorrelation between the 3-10 keV and the 15 GHz radio fluxes and a strong correlation between the 3-200 keV hardness and radio flux. 
J. Malzac, P.O. Petrucci, E. Jourdain, P. Sizun, M. Cadolle, G.   Pooley, C. Cabanac, S. Chaty, T. Belloni, J. Rodriguez, J....