APO1 - X-Ray Spectroscopy of High Energy Sources with the XMM-Newton Satellite |
Speaker_ |
Nowak, Michael |
Co-autors |
Joern Wilms, Katja Pottschmidt, Sera Markoff |
Talk _ |
The Galactic Microquasar Cyg X-1: 10 Years of Observations with RXTE (and a few Chandra Observations, Too) |
Abstract _ |
Since 1996, we have performed over 200 observations with the Rossi Timing Explorer (RXTE) of the galactic microquasar Cyg X-1. Most of these observations have had strictly simultaneous radio measurements using the Ryle radio telescope. We have observed Cyg X-1 in spectrally hard/radio bright states, spectrally softer/radio quieter states, and in various state transitions and "failed state transitions". These data have formed the basis of numerous recent studies of the Cyg X-1 system. I will describe the observational phenomenology of these observations, both in terms of broad band spectra, as well as in terms of X-ray variability. I will describe recent simultaneous observations of a radio/X-ray flare seen by our campaign. I will end with descriptions of recent simultaneous RXTE-Chandra and RXTE-XMM observations of Cyg X-1. |