57 citations · 74 across the 4 of their papers we have counts for
4 papers
Plunging neutron stars as origin of organised magnetic field in galactic nuclei
V. Karas, O. Kopacek, D. Kunneriath +4
Black holes cannot support their own internal magnetic field like, for example, compact stars can. Despite this fact observations indicate that event horizons of supermassive black…
Oblique magnetic fields and the role of frame dragging near rotating black hole
V. Karas, O. Kopacek, D. Kunneriath +1
Magnetic null points can develop near the ergosphere boundary of a rotating black hole by the combined effects of strong gravitational field and the frame-dragging mechanism. The i…
Regular and Chaotic Motion in General Relativity: The Case of a Massive Magnetic Dipole
Ondřej Kopáček, Jiří Kovář, Vladimír Karas +1
Circular motion of particles, dust grains and fluids in the vicinity of compact objects has been investigated as a model for accretion of gaseous and dusty environment. Here we fur…
Inducing chaos by breaking axial symmetry in a black hole magnetosphere
O. Kopáček, V. Karas
While the motion of particles near a rotating, electrically-neutral (Kerr), and charged (Kerr--Newman) black hole is always strictly regular, a perturbation in the gravitational or…