Acceleration of particles by black hole with gravitomagnetic charge immersed in magnetic field

TL;DR

This paper investigates how gravitomagnetic charge and magnetic fields influence particle acceleration near black holes, revealing that gravitomagnetic charge can decrease collision energies and ISCO radii.

Contribution

It introduces the effects of gravitomagnetic charge on particle dynamics and collision energies in magnetized black hole environments, a novel aspect in black hole physics.

Findings

Magnetic fields decrease ISCO radii of charged particles.

Gravitomagnetic charge increases ISCO radii.

Gravitomagnetic charge reduces maximum collision energy.

Abstract

The collision of test charged particles in the vicinity of an event horizon of a weakly magnetized non-rotating black hole with gravitomagnetic charge has been studied. The presence of the external magnetic field decreases the innermost stable circular orbits (ISCO) radii of charged particles. The opposite mechanism occurs when there is nonvanishing gravitomagnetic charge. For a collision of charged particle moving at ISCO and the neutral particle falling from infinity the maximal collision energy can be decreased by gravitomagnetic charge in the presence of external asymptotically uniform magnetic field.