2 papers
astro-ph.HE2017
New closed analytical solutions for geometrically thick fluid tori around black holes: Numerical evolution and the onset of the magneto-rotational instability
Vojtěch Witzany, Pavel Jefremov
When a black hole is accreting well below the Eddington rate, a geometrically thick, radiatively inefficient state of the accretion disk is established. There is a limited number o…
gr-qc2016
Parameters of Innermost Stable Circular Orbits of Spinning Test Particles: Numerical and Analytical Calculations
O. Yu. Tsupko, G. S. Bisnovatyi-Kogan, P. I. Jefremov
The motion of classical spinning test particles in the equatorial plane of a Kerr black hole is considered for the case where the particle spin is perpendicular to the equatorial p…