# Particle acceleration by Majumdar–Papapetrou di-hole

@article{Patil2014ParticleAB, title={Particle acceleration by Majumdar–Papapetrou di-hole}, author={Mandar Patil and P. Joshi}, journal={General Relativity and Gravitation}, year={2014}, volume={46}, pages={1-20} }

We explore the multi-black hole spacetimes from the perspective of the ultra-high energy particle collisions. Such a discussion is limited to the spacetimes containing a single black hole so far. We deal with the Majumdar–Papapetrou solution representing a system consisting of two identical black holes in the equilibrium. In order to identify the conditions suitable for the process of high energy collisions, we consider particles confined to move on the equatorial plane towards the axis of… Expand

#### 5 Citations

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

- Physics
- 2014

We consider collision of two particles near static electrically charged extremal black holes and elucidate the conditions under which the energy in the centre of mass frame $$E_{c.m.}$$Ec.m. grows… Expand

Particle Collision Near 1 + 1-Dimensional Horava-Lifshitz Black Hole and Naked Singularity

- 2017

Copyright © 2017 M. Halilsoy and A. Ovgun. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in… Expand

Particle Acceleration by Static Black Holes in a Model of f(R) Gravity

- Physics
- 2015

Particle collisions are considered within the context of $f(R)$ gravity described by $f(R)=R+2\alpha\sqrt{R}$, where $R$ stands for the Ricci scalar and $\alpha$ is a non-zero constant. The center of… Expand

Particle Collision near 1+1 Dimensional Horava-Lifshitz Black Holes

- Physics
- 2015

The unbounded center-of-mass (CM) energy of colliding particles near horizon of a black hole emerges even in 1+1- dimensional Horava-Lifshitz gravity. The latter has imprints of renormalizable… Expand

Several solutions of the Klein-Gordon equation in Kerr-Newman spacetime and the BSW effect

- Physics
- 2016

We investigate the radial part of the charged massive Klein-Gordon equation in Kerr-Newman spacetime, and in several specific situations, obtain exact solutions by means of essentially hypergeometric… Expand

#### References

SHOWING 1-10 OF 52 REFERENCES

Particle collisions on stringy black hole background

- Physics
- 2010

The collision of two particles in the background of a Sen black hole is studied. With the equations of motion of the particles, the center-of-mass energy is investigated when the collision takes… Expand

Collisional Penrose process near the horizon of extreme Kerr black holes.

- Physics, Medicine
- Physical review letters
- 2012

It is shown that even under the most favorable idealized conditions the maximal energy of an escaping particle is only a modest factor above the total initial energy of the colliding particles, which implies that one should not expect collisions around a black hole to act as spectacular cosmic accelerators. Expand

High energy particle collisions in superspinning Kerr geometry

- Physics
- 2011

We investigate here the particle acceleration and high energy collision in the Kerr geometry containing a naked singularity. We show that the center of mass energy of collision between two particles,… Expand

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

- Physics
- 2011

Nowadays, the effect of unbound energy in the center-of-mass frame due to near-horizon collisions attracts much attention. We show the generality of the effect combining two seemingly completely… Expand

Acceleration of particles and shells by Reissner-Nordstr\

- Physics
- 2011

We explore the Reissner-Nordstr\"{o}m naked singularities with a charge $Q$ larger than its mass $M$ from the perspective of the particle acceleration. We first consider a collision between two test… Expand

Acceleration of colliding shells around a black hole: Validity of the test particle approximation in the Banados-Silk-West process

- Physics
- 2011

Recently, Banados, Silk and West (BSW) showed that the total energy of two colliding test particles has no upper limit in their center of mass frame in the neighborhood of an extreme Kerr black hole,… Expand

Charged spinning black holes as particle accelerators

- Physics
- 2010

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 the… Expand

Energetics of particle collisions near dirty rotating extremal black holes: Banados-Silk-West effect versus Penrose process

- Physics
- 2012

If two particles collide near the horizon of a rotating extremal black hole, under certain conditions the energy E_{c.m.} in the center-of-mass frame can grow without limit (the so-called… Expand

Numerical estimation of the escaping flux of massless particles created in collisions around a Kerr black hole

- Physics
- 2011

The geodesics of massless particles produced in collisions near a rotating black hole are solved numerically and a Monte Carlo integration of the momentum distribution of the massless particles is… Expand

Ultrahigh energy collision with neither black hole nor naked singularity

- Physics
- 2013

We explore the collision between two concentric spherical thin shells. The inner shell is charged, whereas the outer one is either neutral or charged. In the situation we consider, the charge of the… Expand