8 citations · 8 across the 3 of their papers we have counts for
6 papers
Multiwavelength Observations of Mrk 501 in 2008
D. Kranich, D. Paneque, A. Cesarini +16
The well-studied VHE (E >100 GeV) blazar Mrk 501 was observed between March and May 2008 as part of an extensive multiwavelength observation campaign including radio, optical, X-ra…
Modelling the energy dependencies of high-frequency QPO in black hole X-ray binaries
P. T. Zycki, A. Niedzwiecki, M. A. Sobolewska
We model energy dependencies of the quasi periodic oscillations (QPO) in the model of disc epicyclic motions, with X-ray modulation caused by varying relativistic effects. The mode…
Energy spectra of X-ray quasi-periodic oscillations in accreting black hole binaries
P. T. Zycki, M. A. Sobolewska, A. Niedzwiecki
We investigate the energy dependencies of X-ray quasi-periodic oscillations in black hole X-ray binaries. We analyze RXTE data on both the low- and high-frequency QPO. We construct…
Bulk motion Comptonization in black-hole accretion flows
Andrzej Niedzwiecki, Andrzej A. Zdziarski
We study spectra generated by Comptonization of soft photons by cold electrons radially free-falling onto a black hole. We use a Monte Carlo method involving a fully relativistic d…
Comptonization in the vicinity of black hole horizon
Andrzej Niedzwiecki
Using a Monte Carlo method, we derive spectra arising from Comptonization taking place close to a Kerr black hole. We consider a model consisting of a hot thermal corona Comptonizi…
On the influence of relativistic effects on X-ray variability of accreting black holes
P. T. Zycki, A. Niedzwiecki
X-rays produced by compact flares co-rotating with a Keplerian accretion disc are modulated in time by Doppler effects. We improve on previous calculations of these effects by cons…