Near-horizon Structure of Escape Zones of Electrically Charged Particles around Weakly Magnetized Rotating Black Hole. II. Acceleration and Escape in the Oblique Magnetosphere

0536074 - ASÚ 2021 RIV US eng J - Článek v odborném periodiku
Kopáček, Ondřej - Karas, Vladimír
Near-horizon Structure of Escape Zones of Electrically Charged Particles around Weakly Magnetized Rotating Black Hole. II. Acceleration and Escape in the Oblique Magnetosphere.
Astrophysical Journal. Roč. 900, č. 2 (2020), č. článku 119. ISSN 0004-637X. E-ISSN 1538-4357
Grant CEP: GA ČR(CZ) GC19-01137J; GA MŠMT(CZ) 8JCH1080
Institucionální podpora: RVO:67985815
Klíčová slova: black hole physics * chaos * jets
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 5.877, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.3847/1538-4357/ababa8

Here we relax this assumption and investigate nonaxisymmetric systems in which the magnetic field is arbitrarily inclined with respect to the black hole spin. We study the system numerically in order to locate the zones of escaping trajectories and compute the maximum (terminal) escape velocity. It appears that breaking the axial symmetry (even by small inclination angles) substantially increases the fraction of escaping orbits and allows the acceleration to ultrarelativistic velocities that were excluded in the axisymmetric setup. The presence of transient chaotic dynamics in the launching region of the relativistic outflow is confirmed with chaotic indicators.
Trvalý link: http://hdl.handle.net/11104/0313913