scholarly journals Acceleration of particles by black holes as a result of deceleration: Ultimate manifestation of kinematic nature of BSW effect

2012 ◽  
Vol 712 (3) ◽  
pp. 161-164 ◽  
Author(s):  
Oleg B. Zaslavskii
Keyword(s):  
Black Holes ◽  
Acceleration Of Particles ◽  
Bsw Effect

scholarly journals Acceleration of particles in Einstein-Maxwell-dilaton black holes

2017 ◽  
Vol 41 (6) ◽  
pp. 065101 ◽  
Author(s):  
Pu-Jian Mao ◽  
Ran Li ◽  
Lin-Yu Jia ◽  
Ji-Rong Ren
Keyword(s):  
Black Holes ◽  
Acceleration Of Particles ◽  
Dilaton Black Holes

scholarly journals Kinematics of ultra-high energy particle collisions near black holes in the magnetic field

2015 ◽  
Vol 30 (06) ◽  
pp. 1550027 ◽  
Author(s):  
O. B. Zaslavskii
Keyword(s):  
Magnetic Field ◽  
Black Holes ◽  
Center Of Mass ◽  
High Energy ◽  
High Energy Particle ◽  
Ultra High Energy ◽  
Particle Collisions ◽  
Mass Frame ◽  
Bsw Effect ◽  
The Magnetic Field

There are different versions of collisions of two particles near black holes with unbound energy E cm in the center of mass frame. The so-called BSW effect arises when a slow fine-tuned "critical" particle hits a rapid "usual" one. We discuss a scenario of collision in the strong magnetic field for which explanation turns out to be different. Both particles are rapid but the nonzero angle between their velocities (which are both close to c, the speed of light) results in a relative velocity close to c and, hence, big E cm .

Formation of black holes through BSW effect and black hole–black hole collisions

2013 ◽  
Vol 347 (2) ◽  
pp. 277-281 ◽  
Author(s):  
Farruh Atamurotov ◽  
Bobomurat Ahmedov ◽  
Sanjar Shaymatov
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Bsw Effect

scholarly journals ACCELERATION OF PARTICLES BY QUASIBLACK HOLES

2013 ◽  
Vol 22 (06) ◽  
pp. 1350028 ◽  
Author(s):  
O. B. ZASLAVSKII
Keyword(s):  
Black Hole ◽  
Angular Momentum ◽  
Electric Charge ◽  
Center Of Mass ◽  
Finite Energy ◽  
Fine Tuning ◽  
Black Hole Horizon ◽  
Acceleration Of Particles ◽  
Bsw Effect

If two particles collide near the black hole horizon, the energy in their center of mass (CM) frame can grow indefinitely (the so-called Bañados, Silk and West (BSW) effect). This requires fine-tuning the parameters (the energy–momentum, angular momentum or electric charge) of one particle. We show that the CM energy can be unbound also for collisions in the spacetime of quasiblack holes (QBHs) (the objects on the threshold of forming the horizon which do not collapse). It does not require special fine-tuning of parameters and occurs when any particle inside a QBH having a finite energy collides with the particle that entered a QBH from the outside region.

scholarly journals New mechanism of acceleration of particles by stellar black holes

2017 ◽  
Vol 26 (04) ◽  
pp. 1750034 ◽  
Author(s):  
Zaza Osmanov
Keyword(s):  
Black Holes ◽  
Particle Acceleration ◽  
Euler Equation ◽  
Charge Separation ◽  
Continuity Equation ◽  
Parametric Instability ◽  
Landau Damping ◽  
Acceleration Of Particles ◽  
Langmuir Waves ◽  
Energy Transfers

In this paper, we study the efficiency of particle acceleration in the magnetospheres of stellar mass black holes. For this purpose, we consider the linearized set of the Euler equation, continuity equation and Poisson equation, respectively. After introducing the varying relativistic centrifugal force, we show that the charge separation undergoes the parametric instability, leading to generation of centrifugally-excited Langmuir waves. It is shown that these waves, via the Langmuir collapse damp by means of the Landau damping, as a result, energy transfers to particles accelerating them to energies of the order of [Formula: see text] eV.

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