200 citations · 1.2k across the 24 of their papers we have counts for
24 papers
Radiative GRMHD simulations of puffy accretion discs: Numerical versus analytical models of sub-Eddington accretion
Debora Lančová, Maciek Wielgus, Marek Abramowicz +6
A widely accepted picture of an accretion flow in the luminous soft spectral state of X-ray binary systems is a geometrically thin disc structure much like the classic analytic sol…
Universal behaviour of -viscosity in black hole accretion discs
Marek A. Abramowicz, Axel Brandenburg, Jiří Horák +4
The Shakura-Sunyaev -viscosity coefficient, defined as the ratio of total stress to total pressure, , began to play an important role in the development of accr…
Modified Newtonian potentials for particles and fluids in permanent rotation around black holes
V. Karas, M. A. Abramowicz
Modified Newtonian potentials have been proposed for the description of relativistic effects acting on particles and fluids in permanent orbital motion around black holes. Here we…
Distinguishing between spot and torus models of high-frequency quasiperiodic oscillations
V. Karas, P. Bakala, G. Torok +8
In the context of high-frequency quasi-periodic oscillation (HF QPOs) we further explore the appearance of an observable signal generated by hot spots moving along quasi-elliptic t…
Spectral signature of oscillating slender tori surrounding Kerr black holes
F. H. Vincent, G. P. Mazur, O. Straub +4
Context. Some microquasars exhibit millisecond quasi-periodic oscillations (QPO) that are likely related to phenomena occuring in the immediate vicinity of the central black hole.…
Power density spectra of modes of orbital motion in strongly curved spacetime: obtaining the observable signal
P. Bakala, G. Torok, V. Karas +8
High frequency quasi-periodic oscillations (HF QPOs) appear in the X-ray variability of several accreting low-mass binaries. In a series of works it was suggested that these QPOs m…