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Polarized Gamma-Ray Emission from the Galactic Black Hole Cygnus X-1
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 clearExpand
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Long term variability of Cygnus X-1. I. X-ray spectral-temporal correlations in the hard state
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 TimingExpand
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Modulated High-Energy Gamma-Ray Emission from the Microquasar Cygnus X-3
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 relativisticExpand
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The causal connection between disc and power-law variability in hard state black hole X-ray binaries
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 discExpand
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Long term variability of Cygnus X-1 - IV. Spectral evolution 1999–2004
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 ∼200Expand
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A good long look at the black hole candidates LMC X-1 and LMC X-3
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 hereExpand
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High variability in Vela X-1: giant flares and off states
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
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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
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Long term variability of Cygnus X-1 - III. Radio–X-ray correlations
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 quantitativelyExpand
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CORONA, JET, AND RELATIVISTIC LINE MODELS FOR SUZAKU/RXTE/CHANDRA-HETG OBSERVATIONS OF THE CYGNUS X-1 HARD STATE
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 andExpand
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