Near-horizon structure of escape zones of electrically charged particles around weakly magnetized rotating black hole: case of oblique magnetosphere

Abstract

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 on geodesic orbits in the equatorial plane become ionized, and hence they are destabilized by the charging process. Fraction of charged particles are then accelerated out of the equatorial plane and then follow jet like trajectories with relativistic velocities. We explore non axisymmetric systems in which the magnetic field is 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 terminal escape velocity. By breaking the axial symmetry we notice increasing fraction of unbound orbits which allow for acceleration to ultrarelativistic velocities.

7 pages, 3 figures; to appear in Proceedings of IWARA2020 - 9th International Workshop on Astronomy and Relativistic Astrophysics (on-line, 6-12 of September 2020), https://indico.cern.ch/event/822124/contributions/3970054/

References in corpus (3)

• Transition from Regular to Chaotic Circulation in Magnetized Coronae near Compact Objects
• Inducing chaos by breaking axial symmetry in a black hole magnetosphere
• Near-horizon structure of escape zones of electrically charged particles around weakly magnetized rotating black hole

Cited by in corpus (4)

• On Innermost Stable Spherical Orbits near a rotating black hole: A numerical study of the particle motion near the plunging region
• Magnetized black holes: interplay between charge and rotation
• Dragging of inertial frames by matter and waves
• Magnetized black holes: the role of rotation, boost, and accretion in twisting the field lines and accelerating particles