GR models of the X-ray spectral variability of MCG--6-30-15 (2009)
We study in details the GR models of the X-ray spectral variability for various geometries of the X-ray source and various relativistic effects being the dominant cause of the variability. The...
We investigate properties of iron fluorescent line arising as a result of illumination of a black hole accretion disc by an X-ray source located above the disc surface. We study in details the...
Modelling the energy dependencies of high-frequency QPO in black hole X-ray binaries (2007)
Zycki, P. T., Niedzwiecki, A., Sobolewska, M. A.
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 model was proposed to...
On the role of relativistic effects in X-ray variability of AGN (2006)
Special relativistic and strong gravity effects are clearly seen in X-ray energy spectra from AGN. Most important here are the broad profiles of the Fe Kalpha line observed in a large fraction of...
Energy spectra of X-ray quasi-periodic oscillations in accreting black hole binaries (2006)
Zycki, P. T., Sobolewska, M. A., Niedzwiecki, A.
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 the low-f QPO...
On the influence of relativistic effects on X-ray variability of accreting black holes (2004)
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 considering recent...
Subjective Loudness of Sonic Boom: N-Wave and Minimized ('Low-Boom') Signatures. (2002)
A loudspeaker-driven simulation booth with extended rise-time capability (down to 0.22 ms) has been used for subjective loudness tests of sonic booms. Test series I compared N-waves over a range of...
Reveillaud, I, Niedzwiecki, A, Bensch, K G, Fleming, J E
Superoxide dismutases (SOD) play a major role in the intracellular defense against oxygen radical damage to aerobic cells. In eucaryotes, the cytoplasmic form of the enzyme is a 32-kDa dimer...
Reveillaud, I, Niedzwiecki, A, Bensch, K G, Fleming, J E
Superoxide dismutases (SOD) play a major role in the intracellular defense against oxygen radical damage to aerobic cells. In eucaryotes, the cytoplasmic form of the enzyme is a 32-kDa dimer...