Electric Penrose process: High-energy acceleration of ionized particles by nonrotating weakly ...

@article{57528,
   author = {Tursunov, Arman and Juraev, Bakhtinur and Stuchlík, Zdeněk and Kološ, Martin},
   article_location = {College Park (USA)},
   article_number = {8},
   doi = {http://dx.doi.org/10.1103/PhysRevD.104.084099},
   keywords = {EXTRACTION;ENERGETICS},
   language = {eng},
   issn = {2470-0010},
   journal = {Physical Review D},
   title = {Electric Penrose process: High-energy acceleration of ionized particles by nonrotating weakly charged black hole},
   url = {https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.084099},
   volume = {104},
   year = {2021}
}

TY  - JOUR
ID  - 57528
AU  - Tursunov, Arman - Juraev, Bakhtinur - Stuchlík, Zdeněk - Kološ, Martin
PY  - 2021
TI  - Electric Penrose process: High-energy acceleration of ionized particles by nonrotating weakly charged black hole
JF  - Physical Review D
VL  - 104
IS  - 8
SP  - "084099-1"-"084099-9"
EP  - "084099-1"-"084099-9"
PB  - American Physical Society
SN  - 24700010
KW  - EXTRACTION;ENERGETICS
UR  - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.084099
N2  - In many astrophysical scenarios the charge of the black hole is often neglected due to unrealistically large values of the charge required for the Reissner-Nordstrom spacetime metric. However, black holes may possess small electric charge due to various selective accretion mechanisms. In this paper we investigate the effect of a small hypothetical electric charge of a Schwarzschild black hole on the ionization of a freely falling neutral particle and subsequent escape of the ionized particle from the black hole. We show that the energy of ionized particle can grow ultrahigh and discuss distinguishing signatures of particle acceleration by weakly charged black holes. We also discuss a possible application of the proposed mechanism as an alternative cosmic ray acceleration scenario. In particular we show that the Galactic center supermassive black hole is capable to act as a PeVatron of protons. The presented mechanism can serve as a simple toy model of a nonrotating compact object acting as a particle accelerator with a potential astrophysical implementations related to the cosmic ray physics and beyond.
ER  - 

TURSUNOV, Arman, Bakhtinur JURAEV, Zdeněk STUCHLÍK a Martin KOLOŠ. Electric Penrose process: High-energy acceleration of ionized particles by nonrotating weakly charged black hole. \textit{Physical Review D}. College Park (USA): American Physical Society, 2021, roč.~104, č.~8, s.~''084099-1''-''084099-9'', 9 s. ISSN~2470-0010. Dostupné z: https://dx.doi.org/10.1103/PhysRevD.104.084099.