668 citations · 6k across the 88 of their papers we have counts for
88 papers
The stress at the ISCO of black-hole accretion discs is not a free parameter
Jean-Pierre Lasota, Marek Abramowicz
Radiation from the "plunging region" (the space between the innermost stable circular orbit (ISCO) and the black-hole (BH) surface) of an accretion flow onto a BH is supposed to ad…
A Robust Test of the Existence of Primordial Black Holes in Galactic Dark Matter Halos
Marek Abramowicz, Michal Bejger, Andrzej Udalski +1
If very low mass primordial black holes (PBH) within the asteroid/moon-mass range indeed reside in galactic dark matter halos, they must necessarily collide with galactic neutron s…
Observational properties of puffy disks: radiative GRMHD spectra of mildly sub-Eddington accretion
Maciek Wielgus, Debora Lancova, Odele Straub +7
Numerical general relativistic radiative magnetohydrodynamic simulations of accretion disks around a stellar mass black hole with a luminosity above 0.5 of the Eddington value reve…
Elliptical accretion disk as a model for tidal disruption events
Fukun Liu, Chunyang Cao, Marek A. Abramowicz +3
Elliptical accretion disk models for tidal disruption events (TDEs) have been recently proposed and independently developed by two groups. Although these two models are characteriz…
Models of high-frequency quasi-periodic oscillations and black hole spin estimates in Galactic microquasars
Andrea Kotrlová, Eva Šrámková, Gabriel Török +6
We explore the influence of non-geodesic pressure forces that are present in an accretion disk on the frequencies of its axisymmetric and non-axisymmetric epicyclic oscillation mod…
Geometric modeling of M87* as a Kerr black hole or a non-Kerr compact object
F. H. Vincent, M. Wielgus, M. A. Abramowicz +4
Context. The Event Horizon Telescope (EHT) collaboration recently obtained first images of the surroundings of the supermassive compact object M87* at the center of the galaxy M87.…