79 citations · 174 across the 9 of their papers we have counts for
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Near-horizon structure of escape zones of electrically charged particles around weakly magnetized rotating black hole: case of oblique magnetosphere
Vladimir Karas, Ondrej Kopacek
We study the effects of large scale magnetic fields on the dynamics of charged particles near a rotating black hole. We consider a scenario in which the initially neutral particles…
Near-horizon structure of escape zones of electrically charged particles around weakly magnetized rotating black hole. II. Acceleration and escape in the oblique magnetosphere
Ondřej Kopáček, Vladimír Karas
Strong gravity and magnetic fields are key ingredients that power processes of accretion and ejection near compact objects. While the particular mechanisms that operate here are st…
Emergence of magnetic null points in electro-vacuum magnetospheres of compact objects: The case of a plunging neutron star
Ondřej Kopáček, Tayebeh Tahamtan, Vladimír Karas
Relativistic effects of compact objects onto electromagnetic fields in their vicinity are investigated using the test-field approximation. In particular, we study the possible emer…
Null Points in the Magnetosphere of a Plunging Neutron Star
Ondřej Kopáček, T. Tahamtan, Vladimír Karas
We explore the structure of a dipole-type vacuum field of a slowly rotating magnetic star near the horizon of a supermassive black hole, where the structure of field lines becomes…
Near-horizon structure of escape zones of electrically charged particles around weakly magnetized rotating black hole
Ondřej Kopáček, Vladimír Karas
An interplay of magnetic fields and gravitation drives accretion and outflows near black holes. However, a specific mechanism is still a matter of debate; it is very likely that di…