SHAYMATOV, Sanjar, Bobomurat AHMEDOV, Zdeněk STUCHLÍK a Ahmadjon ABDUJABBAROV. Effect of an external magnetic field on particle acceleration by a rotating black hole surrounded with quintessential energy. International Journal of Modern Physics D. roč. 27, č. 8, s. "1850088-1"-"1850088-1", 33 s. ISSN 0218-2718. doi:10.1142/S0218271818500888. 2018.
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Základní údaje
Originální název Effect of an external magnetic field on particle acceleration by a rotating black hole surrounded with quintessential energy
Autoři SHAYMATOV, Sanjar (860 Uzbekistán), Bobomurat AHMEDOV (860 Uzbekistán), Zdeněk STUCHLÍK (203 Česká republika, garant, domácí) a Ahmadjon ABDUJABBAROV (860 Uzbekistán).
Vydání International Journal of Modern Physics D, 2018, 0218-2718.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 10308 Astronomy
Stát vydavatele Singapur
Utajení není předmětem státního či obchodního tajemství
WWW URL
Kód RIV RIV/47813059:19240/18:A0000261
Organizační jednotka Filozoficko-přírodovědecká fakulta v Opavě
Doi http://dx.doi.org/10.1142/S0218271818500888
UT WoS 000433474900013
Klíčová slova anglicky quintessential rotating black hole; magnetic field; BSW effect
Příznaky Mezinárodní význam, Recenzováno
Návaznosti GB14-37086G, projekt VaV.
Změnil Změnil: RNDr. Jan Hladík, Ph.D., učo 25379. Změněno: 4. 4. 2019 08:05.
Anotace
We investigate particle motion and collisions in the vicinity of rotating black holes immersed in combined cosmological quintessential scalar field and external magnetic field. The quintessential dark-energy field governing the spacetime structure is characterized by the quintessential state parameter omega_q is an element of(-1;-1/3) characterizing its equation of state, and the quintessential field-intensity parameter c determining the static radius where the black hole attraction is just balanced by the quintessential repulsion. The magnetic field is assumed to be test field that is uniform close to the static radius, where the spacetime is nearly flat, being characterized by strength B there. Deformations of the test magnetic field in vicinity of the black hole, caused by the Ricci non-flat spacetime structure are determined. General expression of the center-of-mass energy of the colliding charged or uncharged particles near the black hole is given and discussed in several special cases. In the case of nonrotating black holes, we discuss collisions of two particles freely falling from vicinity of the static radius, or one such a particle colliding with charged particle revolving at the innermost stable circular orbit. In the case of rotating black holes, we discuss briefly particles falling in the equatorial plane and colliding in close vicinity of the black hole horizon, concentrating attention to the interplay of the effects of the quintessential field and the external magnetic field. We demonstrate that the ultra-high center-of-mass energy can be obtained for black holes placed in an external magnetic field for an infinitesimally small quintessential field-intensity parameter c; the center-of-mass energy decreases if the quintessential field-intensity parameter c increases.
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