Black holes as particle accelerators: a brief review

@article{Harada2014BlackHA,
  title={Black holes as particle accelerators: a brief review},
  author={T. Harada and M. Kimura},
  journal={arXiv: General Relativity and Quantum Cosmology},
  year={2014}
}
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 robust as it is founded on the basic properties of geodesic orbits around a near-extremal Kerr black hole. On the other hand, the maximum energy of the acceleration is subjected to several physical effects. There is convincing evidence that the particle acceleration to arbitrarily high energy is one of the… Expand

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References

SHOWING 1-10 OF 67 REFERENCES
Weakly magnetized black holes as particle accelerators
We study collision of particles in the vicinity of a horizon of a weakly magnetized non-rotating black hole. In the presence of the magnetic field innermost stable circular orbits (ISCO) of chargedExpand
Acceleration of particles by black holes: kinematic explanation
A new simple and general explanation of the effect of acceleration of particles by black holes to infinite energies in the centre of mass frame is suggested. It is based on kinematics of particlesExpand
Effect of a Weak Electromagnetic Field on Particle Acceleration by a Rotating Black Hole
We study high energy charged particle collisions near the horizon in an electromagnetic field around a rotating black hole and reveal the condition of the fine-tuning to obtain arbitrarily largeExpand
Acceleration of particles by black holes—a general explanation
We give a simple and general explanation for the effect of unbound acceleration of particles by black holes. It is related to the fact that the scalar product of a timelike vector of theExpand
Kerr Naked Singularities as Particle Accelerators
We investigate here the particle acceleration by Kerr naked singularities. We consider a collision between particles dropped in from infinity at rest, which follow geodesic motion in the equatorialExpand
Particle acceleration around a five-dimensional Kerr black hole
In the paper [1] authors have studied the center-ofmass (CM) energy of colliding two particles near the rotating black hole. They observed the divergence of the CM energy in the extreme rotatingExpand
Kerr black holes as particle accelerators to arbitrarily high energy.
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 acceleratorsExpand
Charged spinning black holes as particle accelerators
It has recently been pointed out that the spinning Kerr black hole with maximal spin could act as a particle collider with arbitrarily high center-of-mass energy. In this paper, we will extend theExpand
On particle collisions near rotating black holes
Scattering of particles with different masses and energy in the gravitational field of rotating black holes is considered both outside and inside the black hole. Expressions for scattering energy ofExpand
Unbound geodesics from the ergosphere and potential observability of debris from ultrahigh energy particle collisions
Particle collisions in black hole ergoregions may result in extremely high center of mass energies that could probe new physics if escape to infinity were possible. Here we show that some geodesicsExpand
...
1
2
3
4
5
...