Zobrazeno 1 - 10
of 1 738
pro vyhledávání: '"Zaslavskii, A."'
The Penrose process, a process that transfers energy from a black hole to infinity, together with the BSW mechanism, which uses collisions of ingoing particles at the event horizon of a black hole to locally produce large amounts of energy, is studie
Externí odkaz:
http://arxiv.org/abs/2411.14528
Autor:
Toporensky, A. V., Zaslavskii, O. B.
We consider near-horizon collisions between two particles moving freely in the Schwarzschild metric in the region outside the horizon. One of them emerges from a white hole. We scrutiny when such a process can lead to the indefinitely large growth of
Externí odkaz:
http://arxiv.org/abs/2411.01989
Autor:
Ovcharenko, H. V., Zaslavskii, O. B.
Publikováno v:
Phys.Rev.D 110 (2024) 6, 064016
According to the Banados-SIlk-West (BSW) effect, two particles moving towards a black hole, can collide near the horizon with an unbounded energy in the center of mass frame. This requires one of particles to have fine-tuned parameters in such a way
Externí odkaz:
http://arxiv.org/abs/2405.12198
Autor:
Ovcharenko, H. V., Zaslavskii, O. B.
We consider head-on collisions of two particles near the event horizon. Particle 1 is outgoing, particle 2 is ingoing. We elucidate, in which case the energy $E_{c.m.}$ in the center of mass frame can grow unbounded. If the proper time between the ho
Externí odkaz:
http://arxiv.org/abs/2404.03364
Autor:
Zaslavskii, O. B.
Publikováno v:
Phys. Rev. D 109, 124053 (2024)
We consider the Penrose process with the charged particles in the Reissner-Nordstr\"{o}m (RN) background. Let parent particle 0 decay to particles 1 and 2. With the assumption that all three particles move in the equatorial plane, the exact formulas
Externí odkaz:
http://arxiv.org/abs/2403.12879
Autor:
Ovcharenko, H. V., Zaslavskii, O. B.
Publikováno v:
Phys. Rev. D 109, 124041 (2024)
If two particles moving towards a black hole collide in the vicinity of the horizon, the energy $E_{c.m.}$ in the center of mass frame can grow indefinitely if one of particles is fine-tuned. This is the Ba\~{n}ados, Silk and West (BSW) effect. One o
Externí odkaz:
http://arxiv.org/abs/2402.17383
Autor:
Lemos, José P. S., Zaslavskii, Oleg B.
Publikováno v:
Physical Review D 109, 084016 (2024)
In a space with positive cosmological constant $\Lambda$, we consider a black hole surrounded by a heat reservoir at radius $R$ and temperature $T$, i.e., we analyze the Schwarzschild-de Sitter black hole in a cavity. We use the Euclidean path integr
Externí odkaz:
http://arxiv.org/abs/2402.05166
Publikováno v:
Phys. Rev. D 109, 064065 (2024)
The Penrose process for the decay of electrically charged particles in a Reissner-Nordstr\"om-anti-de Sitter black hole spacetime is studied. To extract large quantities of energy one needs to mount a recursive Penrose process where particles are con
Externí odkaz:
http://arxiv.org/abs/2401.13039
Autor:
Ovcharenko, H. V., Zaslavskii, O. B.
We consider a free-falling observer who crosses the event horizon in the Schwarzschild background. In the course of this fall, he/she can receive signals from an object (like a star surface) that emits radiation. We study how the frequency received b
Externí odkaz:
http://arxiv.org/abs/2309.12175
Autor:
Zaslavskii, O. B.
Publikováno v:
Phys. Rev. D 108, 084022 (2023)
We consider the background of a rotating axially symmetric black hole. Let particle 0 decay to two fragments 1 and 2 in the direction parallel to that of particle 0. It is shown that if decay occurs inside the ergoregion, both particles 1 and 2 move
Externí odkaz:
http://arxiv.org/abs/2307.06469