8 citations · 13 across the 4 of their papers we have counts for
6 papers
Perturbing the accretion flow onto a supermassive black hole by a passing star
Petra Suková, Michal Zajaček, Vojtěch Witzany +1
The close neighbourhood of a supermassive black hole contains not only accreting gas and dust, but also stellar-sized objects like stars, stellar-mass black holes, neutron stars, a…
Missing bright red giants in the Galactic center: A fingerprint of its once active state?
Michal Zajaček, Anabella Araudo, Vladimír Karas +5
In the Galactic center nuclear star cluster, bright late-type stars exhibit a flat or even a decreasing surface-density profile, while fainter late-type stars maintain a cusp-like…
Spin-perturbed orbits near black holes
Vojtěch Witzany
Inspirals of rotating stellar-mass compact objects into massive black holes are influenced by the spin-curvature coupling, which drives the compact body away from geodesic motion d…
Hamilton-Jacobi equation for spinning particles near black holes
Vojtěch Witzany
A compact stellar-mass object inspiralling onto a massive black hole deviates from geodesic motion due to radiation-reaction forces as well as finite-size effects. Such post-geodes…
Recurrence analysis of spinning particles in the Schwarzschild background
Ondřej Zelenka, Georgios Lukes-Gerakopoulos, Vojtěch Witzany
In this work the dynamics of a spinning particle moving in the Schwarzschild background is studied. In particular, the methods of Poincaré section and recurrence analysis are emplo…
Exploiting the hidden symmetry of spinning black holes: conservation laws and numerical tests
Vojtěch Witzany
The Kerr black hole is stationary and axisymmetric, which leads to conservation of energy and azimuthal angular momentum along the orbits of free test particles in its vicinity, bu…