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Polarized Gamma-Ray Emission from the Galactic Black Hole Cygnus X-1
- P. Laurent, J. Rodriguez, J. Wilms, M. Cadolle Bel, K. Pottschmidt, V. Grinberg
- Physics, Medicine
- Science
- 21 April 2011
This gamma-ray emission originates from a jet of relativistic particles that is formed in close proximity to the black hole. Because of their inherently high flux allowing the detection of clear… Expand
Long term variability of Cygnus X-1. I. X-ray spectral-temporal correlations in the hard state
- K. Pottschmidt, J. Wilms, +12 authors Ucb
- Physics
- 13 February 2002
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 Rossi X-ray Timing… Expand
Modulated High-Energy Gamma-Ray Emission from the Microquasar Cygnus X-3
- A. Abdo, M. Ackermann, +173 authors M. Ziegler
- Physics, Medicine
- Science
- 11 December 2009
Microquasar Spotted Microquasars are binary star systems where a normal star sheds matter onto a neutron star or a black hole, generating x-ray radiation and jets of material moving at relativistic… Expand
The causal connection between disc and power-law variability in hard state black hole X-ray binaries
- P. Uttley, T. Wilkinson, +4 authors M. Boeck
- Physics
- 4 April 2011
We use the XMM–Newton EPIC-pn instrument in timing mode to extend spectral time-lag studies of hard state black hole X-ray binaries into the soft X-ray band. We show that variations of the disc… Expand
Long term variability of Cygnus X-1 - IV. Spectral evolution 1999–2004
- J. Wilms, M. Nowak, +6 authors Iaa Tuebingen
- Physics
- 6 October 2005
Continuing the observational campaign initiated by our group, we present the long term spectral evolution of the Galactic black hole candidate Cygnus X-1 in the X-rays and at 15 GHz. We present ∼200… Expand
A good long look at the black hole candidates LMC X-1 and LMC X-3
- M. Nowak, J. Wilms, +10 authors Cu Boulder
- Physics
- 24 May 2000
ABSTRA C T LMC X-1 and LMC X-3 are the only known persistent stellar-mass black-hole candidates that have almost always shown spectra that are dominated by a soft, thermal component. We present here… Expand
High variability in Vela X-1: giant flares and off states
- I. Kreykenbohm, J. Wilms, +6 authors R. Staubert
- Physics
- 16 October 2008
Aims. We investigate the spectral and temporal behavior of the high mass X-ray binary Vela X-1 during a phase of high activity, with special focus on the observed giant flares and off states.… Expand
Soft-to-Hard State Transitions in LMC X-3
ABSTRA C T We present the analysis of the approximately three-year long Rossi X-ray Timing Explorerd (RXTE) campaign for monitoring the canonical soft state black-hole candidates LMC X-1 and LMC X-3.… Expand
Long term variability of Cygnus X-1 - III. Radio–X-ray correlations
- T. Gleißner, J. Wilms, +13 authors U. Amsterdam
- Physics
- 3 July 2004
Long time scale radio-X-ray correlations in black holes during the hard state have been found in many sources and there seems to emerge a universal underlying relationship which quantitatively… Expand
CORONA, JET, AND RELATIVISTIC LINE MODELS FOR SUZAKU/RXTE/CHANDRA-HETG OBSERVATIONS OF THE CYGNUS X-1 HARD STATE
- M. Nowak, M. Hanke, +7 authors F. Tramper
- Physics, Economics
- 21 December 2010
Using Suzaku and the Rossi X-ray Timing Explorer (RXTE), we have conducted a series of four simultaneous observations of the galactic black hole candidate Cyg X-1 in what were historically faint and… Expand
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