Kerr Black Holes as Particle Accelerators to Arbitrarily High Energy

Abstract

We show that intermediate mass black holes conjectured to be the early precursors of supermassive black holes and surrounded by relic cold dark matter density spikes can act as particle accelerators with collisions, in principle, at arbitrarily high center-of-mass energies in the case of Kerr black holes. While the ejecta from such interactions will be highly redshifted, we may anticipate the possibility of a unique probe of Planck-scale physics.

Dynamics of a charged particle around a slowly rotating Kerr black hole immersed in magnetic field

“…However, predicting the nature of outcome is compounded by the facts that the particle is charged and interacts with the magnetic field and is frame dragged by the Kerr black hole. It should be noted that the present work is altogether different from the BSW mechanism where two particles (with nonzero angular momentum and high energies) arrive from spatial infinity and collide near the event horizon to generate surplus energy in the center of mass frame [16]. In the literature, the motion of charged particles in ISCO around various black holes has been studied ( [17][18][19][20][21][22] and see references therein).…”

Center of mass energy of the collision for two general geodesic particles around a Kerr-Newman-Taub-NUT black hole

“…The metric (2.1) becomes singular if Σ = 0 or ∆ = 0, whereas Σ = 0 is the curvature singularity and ∆ = 0 is the coordinate singularity. 1 Here, Σ = 0 implies r = 0 and cos θ = − n a . The horizon(s) of the KNTN black hole occur at…”

“…The phenomenon of arbitrary high CME is a purly relativistic phenomenon and they serves as an excellent tool to study high energy astrophysics. Bañados, Silk and West (BSW) [1] studied the collision for two particles around a Kerr black hole and determined the center of mass energy (CME) in the equatorial plane. Subsequently, in [2,3], the authors further elucidated the BSW mechanism.…”

Ultra-high energy collisions in static space-times: single versus multi-black hole cases

“…Meanwhile, high energy collision near rotating black holes were considered before in a series of papers [2] - [4]. There is a crucial difference, however, between these papers and [1]. In the first case, unbounded E c.m.…”

“…unbounded [1]. Meanwhile, high energy collision near rotating black holes were considered before in a series of papers [2] - [4].…”