| TURIMOV, Bobur, Javlon RAYIMBAEV, Ahmadjon ABDUJABBAROV, Bobomurat AHMEDOV and Zdeněk STUCHLÍK. Test particle motion around a black hole in Einstein-Maxwell-scalar theory. Physical Review D. US - Spojené státy americké, 2020, vol. 102, No 6, p. "064052-1"-"064052-14", 14 pp. ISSN 1550-7998. Available from: https://dx.doi.org/10.1103/PhysRevD.102.064052. |
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@article{49291,
author = {Turimov, Bobur and Rayimbaev, Javlon and Abdujabbarov, Ahmadjon and Ahmedov, Bobomurat and Stuchlík, Zdeněk},
article_location = {US - Spojené státy americké},
article_number = {6},
doi = {http://dx.doi.org/10.1103/PhysRevD.102.064052},
keywords = {MAGNETIZED ORBITS; FIELD-THEORIES; SPACETIMES; GRAVITY; RESONANCE; CONSTANT; DYNAMICS; ENERGY; CHAOS; SPIN},
language = {eng},
issn = {1550-7998},
journal = {Physical Review D},
title = {Test particle motion around a black hole in Einstein-Maxwell-scalar theory},
url = {https://journals.aps.org/prd/abstract/10.1103/PhysRevD.102.064052},
volume = {102},
year = {2020}
}
TY - JOUR
ID - 49291
AU - Turimov, Bobur - Rayimbaev, Javlon - Abdujabbarov, Ahmadjon - Ahmedov, Bobomurat - Stuchlík, Zdeněk
PY - 2020
TI - Test particle motion around a black hole in Einstein-Maxwell-scalar theory
JF - Physical Review D
VL - 102
IS - 6
SP - "064052-1"-"064052-14"
EP - "064052-1"-"064052-14"
SN - 15507998
KW - MAGNETIZED ORBITS
KW - FIELD-THEORIES
KW - SPACETIMES
KW - GRAVITY
KW - RESONANCE
KW - CONSTANT
KW - DYNAMICS
KW - ENERGY
KW - CHAOS
KW - SPIN
UR - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.102.064052
N2 - In this paper, we explore the test particle motion around black hole in Einstein-Maxwell-scalar (EMS) theory using three different black hole solutions within this theory. We have first analyzed the spacetime curvature structure of these solutions and shown the existence of two singularities and the first one is at the center r = 0. In black hole spacetime, there are two regions divided by the critical value of the cosmological parameter lambda(0). The photon sphere around black hole in EMS theory has also been studied and found that it does not depend on cosmological parameter lambda. We have analyzed the innermost stable circular orbits (ISCO) around black hole and shown that for all solutions ISCO radius for neutral particle decreases with the increase of black hole charge. We have also studied the charged particle motion around the black hole where charged particle motion is considered in the presence of gravitational field and the Coulomb potential. It is shown that ISCO radius for charged particles increases depending on the selected value of the coupling parameter which is in contradiction with observations of the inner edge of the accretion disks of the astrophysical black holes and can be used as powerful tool to rule out the EMS theory from consideration for the gravitational field theory. It also studied the fundamental frequencies governed by test particle orbiting around black hole in EMS theory. Finally, as test of black hole solution in EMS theory ISCO radii is compared with that in Kerr black hole and found that the spin parameter of Kerr can be mimic up to a/M similar or equal to 0.936.
ER -
TURIMOV, Bobur, Javlon RAYIMBAEV, Ahmadjon ABDUJABBAROV, Bobomurat AHMEDOV and Zdeněk STUCHLÍK. Test particle motion around a black hole in Einstein-Maxwell-scalar theory. \textit{Physical Review D}. US - Spojené státy americké, 2020, vol.~102, No~6, p.~''064052-1''-''064052-14'', 14 pp. ISSN~1550-7998. Available from: https://dx.doi.org/10.1103/PhysRevD.102.064052.
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