Correlated radio--X-ray variability of Galactic Black Holes: A radio--X-ray flare in Cygnus X-1

Joern Wilms, Katja Pottschmidt, Guy G. Pooley +4

We report on the first detection of a quasi-simultaneous radio-X-ray flare of Cygnus X-1. The detection was made on 2005 April 16 with pointed observations by the Rossi X-ray Timin…