Acceleration of particles by rotating black holes: near-horizon geometry and kinematics

Abstract

Nowadays, the effect of infinite energy in the centre of mass frame due to near-horizon collisions attracts much attention.We show generality of the effect combining two seemingly completely different approaches based on properties of a particle with respect to its local light cone and calculating its velocity in the locally nonrotaing frame directly. In doing so, we do not assume that particles move along geodesics. Usually, a particle reaches a horizon having the velocity equals that of light. However, there is also case of "critical" particles for which this is not so. It is just the pair of usual and critical particles that leads to the effect under discussion. The similar analysis is carried out for massless particles. Then, critical particles are distinguishable due to the finiteness of local frequency. Thus, both approach based on geometrical and kinematic properties of particles moving near the horizon, reveal the universal character of the effect.

8 pages

References in corpus (11)

• Acceleration of particles as universal property of rotating black holes
• Charged Spinning Black Holes as Particle Accelerators
• Collision of an innermost stable circular orbit particle around a Kerr black hole
• Emergent Flux from Particle Collisions Near a Kerr Black Hole
• On particles collisions near rotating black holes
• Collision of two general geodesic particles around a Kerr black hole
• Acceleration of particles by black holes -- general explanation
• Acceleration of colliding shells around a black hole: Validity of the test particle approximation in the Banados-Silk-West process
• Particle Collisions on Stringy Black Hole Background
• Acceleration of particles by black holes: kinematic explanation
• Numerical estimation of the escaping flux of massless particles created in collisions around a Kerr black hole

Cited by in corpus (8)

• Weakly magnetized black holes as particle accelerators
• Acceleration of particles in spacetimes of black string
• Ultra-high energy particle collisions in a regular spacetime without blackholes or naked singularities
• Bañados-Silk-West effect with nongeodesic particles: extremal horizons
• Particle acceleration by Majumdar-Papapetrou di-hole
• Schwarzschild black hole surrounded by quintessential matter field as an accelerator for spinning particles
• Ultra-high energy collisions of nonequatorial geodesic particles near dirty black holes
• Acceleration of particles by quasiblack holes