12 citations · 20 across the 3 of their papers we have counts for
7 papers · 1 filter
Rayleigh and Solberg criteria reversal near black holes: the optical geometry explanation
Marek A. Abramowicz
The familiar Newtonian version of the Rayleigh criterion demands that for dynamical stability the specific angular momentum should increase with the increasing circumferential radi…
The orbital resonance model for twin peak kHz QPOs
Marek A. Abramowicz, Wlodek Kluzniak, Zdenek Stuchlik +1
Many Galactic black hole and neutron star sources in low X-ray mass binaries show QPOs (quasi periodic oscillations) in their observed X-ray fluxes, i.e. peaks in the Fourier varia…
Millisecond oscillators in accreting neutron stars and black holes
W. Kluzniak, M. Abramowicz
Millisecond variability detected in low-mass X-ray binaries (LMXBs) probably reflects motions of accreting fluid in the strong-field gravity of neutron stars or neutron stars. Para…
How Dim Accreting Black Holes Could Be?
Marek A. Abramowicz, Igor V. Igumenshchev
Recent hydrodynamical simulations of radiatively inefficient black hole accretion flows with low viscosity have demonstrated that these flows differ significantly from those descri…
Variability Model for the Microquasar GRS 1915+105
Agnieszka Janiuk, Bozena Czerny, Aneta Siemiginowska +1
We analyse the radiation pressure instability of the standard, optically thisc disc and propose it as an explanation of the obseved variability of the superluminal microquasar GRS…
On the absence of winds in ADAFs
Marek A. Abramowicz, Jean-Pierre Lasota, Igor V. Igumenshchev
We show that recently published assertions that advection dominated accretion flows (ADAFs) require the presence of strong winds are unfounded because they assume that low radiativ…