Rapidly rotating Kerr black holes can accelerate particles to arbitrarily high energy if the
angular momentum of the particle is fine-tuned to some critical value. This phenomenon is …

Shortly after the discovery of the Kerr metric in 1963, it was realized that a region existed
outside of the black hole's event horizon where no time-like observer could remain …

We study the collision of particles in the vicinity of a horizon of a weakly magnetized
nonrotating black hole. In the presence of the magnetic field innermost stable circular orbits …

We analyze the properties of circular orbits of test particles on the equatorial plane of a
rotating central mass whose gravitational field is described by the Kerr spacetime. For …

This paper explores the dynamics of both neutral and charged particles orbiting near a
rotating black hole in scalar–tensor–vector gravity. We study the conditions for the particle to …

The center-of-mass energy of two particles colliding near the horizon of a maximally rotating
black hole can be arbitrarily high if the angular momentum of either of the incident particles …

Soon after the discovery of the Kerr metric, Penrose realized that superradiance can be
exploited to extract energy from black holes. The original idea (involving the breakup of a …

We demonstrate that the rotating four-dimensional Gauss–Bonnet black hole can act as a
particle accelerator with arbitrarily high centre-of-mass (CM) energy, when collision of two …

A bstract Recently, Bañados, Silk and West (BSW) demonstrated that the extremal Kerr black
hole can act as a particle accelerator with arbitrarily high center-of-mass energy (E CM) …

The latest findings of static and spherically symmetric black hole solution give a potential
platform to investigate the novel four-dimensional Einstein Gauss–Bonnet gravity. In order to …