Abstract
The Black Hole (BH) binary Cygnus X-1 has been observed simultaneously by INTEGRAL, RXTE, and XMM-Newton for four times in November and December 2004, when Cyg X-1 became first observable with XMM-Newton. During these observations the source was found in one of its transitional states between the hard state and the soft state. We obtained a high signal to noise spectrum of Cyg X-1 from 3 keV to 1 MeV which allows us to put constraints on the nature of the Comptonizing plasma by modeling the continuum with Comptonization models as eqpair [3]. Using XMM-Newton we were also able to confirm the presence of a relativistically broadened Fe Ka line.
| Original language | English |
|---|---|
| Pages (from-to) | 341-344 |
| Number of pages | 4 |
| Journal | European Space Agency, (Special Publication) ESA SP |
| Issue number | 622 SP |
| State | Published - Jul 2006 |
| Event | 6th Integral Workshop - The Obscured Universe - Moscow, Russian Federation Duration: Jul 2 2006 → Jul 8 2006 |
Keywords
- Black hole physics
- Stars: individual (Cyg X-1)