Energy extraction and particle acceleration around a rotating black hole in Hořava-Lifshitz gravity

Abdujabbarov, Ahmadjon; Ahmedov, Bobomurat; Ahmedov, B. B.

doi:10.1103/physrevd.84.044044

Cited by 45 publications

(23 citation statements)

References 43 publications

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“…In the Fig. 4 we drawĒ CM from the relation (27) for KS solution with small and large ω separately. We find that at large ω limit our result agree with the Ref.…”

Section: The CM Energy Of Two Colliding Particles In the Rotating Hl mentioning

confidence: 99%

Particle acceleration in Horava–Lifshitz black holes

Sadeghi

Pourhassan

2012

Eur. Phys. J. C

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In this paper we calculate the center-of-mass energy of two colliding test particles near the rotating and non-rotating Horava-Lifshitz black hole. For the case of slowly rotating KS solution of Horava-Lifshitz black hole we compare our results with the case of Kerr black holes. We confirm the limited value of the center-of-mass energy for the static black holes and unlimited value of the center-of-mass energy for the rotating black holes. Numerically, we discuss temperature dependence of the center-of-mass energy on the black hole horizon. We obtain the critical angular momentum of particles. In this limit the center-of-mass energy of two colliding particles in the neighborhood of the rotating Horava-Lifshitz black hole could be arbitrarily high. We found appropriate conditions where the critical angular momentum could have an orbit outside the horizon. Finally, we obtain center-of-mass energy corresponding to this circle orbit.

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“…In the Fig. 4 we drawĒ CM from the relation (27) for KS solution with small and large ω separately. We find that at large ω limit our result agree with the Ref.…”

Section: The CM Energy Of Two Colliding Particles In the Rotating Hl mentioning

confidence: 99%

Particle acceleration in Horava–Lifshitz black holes

Sadeghi

Pourhassan

2012

Eur. Phys. J. C

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“…The collision of particles in the vicinity of a horizon of a weakly magnetized nonrotating black hole has been studied in [9]. Acceleration of particles by black hole with gravitomagnetic charge immersed in magnetic field [10], by rotating black hole in a Randall-Sundrum brane with a cosmological constant [11], and by rotating black hole in Hořava-Lifshitz gravity [12] have been studied in detail. Acceleration of electric current-carrying string loop near a Schwarzschild black hole embedded in an external magnetic field in the parallel direction to the axis of symmetry considered in [13].…”

Section: Introductionmentioning

confidence: 99%

Particle acceleration around a five-dimensional Kerr black hole

et al. 2013

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On the lines of the 4-dimensional Kerr black hole we consider the particle acceleration near a 5-dimensional Kerr black hole which has the two rotation parameters. It turns out that the center of mass energy of the two equal mass colliding particles as expected diverges for the extremal black hole and there is a symmetry in the results for θ = 0, π/2. Because of the two rotation parameters, r = 0 can be a horizon without being a curvature singularity. It is shown that the acceleration of particles to high energies near the 5-D extreme rotating black hole avoids fine-tuning of the angular momentum of particles.

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“…Various aspects of this process were analyzed by different authors [2][3][4][5][6][7][8][9][10][11][12][13][14]. A similar process in the context of numerous other examples of black holes including Reissner-Nordström black hole [15] was also studied [16][17][18][19][20][21]. But the analysis so far is confined to the spacetimes that contain a single black hole.…”

Section: Introductionmentioning

confidence: 98%

Particle acceleration by Majumdar–Papapetrou di-hole

Patil

Joshi

2014

Gen Relativ Gravit

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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 symmetry with the zero angular momentum. We consider collision between the particles moving in opposite directions at the location midway between the black holes on the axis. We show that the center of mass energy of collision between the particles increases with the decrease in the separation between the black holes and shows divergence in the limit where the separation goes to zero. We estimate the size of the region close to the central point on the equatorial plane where it would be possible to have high energy collisions and show that this region has a reasonably large spatial extent. We further explore the process of high energy collisions with the general geodesics with arbitrary angular momentum on the equatorial plane away from the central point. Although in this paper we deal with the Majumdar-Papapetrou spacetime which serves as a toy example representing multiple black holes, we speculate on the possibility that the ultra-high energy collisions would also occur in the more general setting like colliding black holes, when distance between the black holes is extremely small, which can in principle be verified in the numerical relativity simulations. M. Patil (B)

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Energy extraction and particle acceleration around a rotating black hole in Hořava-Lifshitz gravity

Cited by 45 publications

References 43 publications

Particle acceleration in Horava–Lifshitz black holes

Particle acceleration in Horava–Lifshitz black holes

Particle acceleration around a five-dimensional Kerr black hole

Particle acceleration by Majumdar–Papapetrou di-hole

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