Quasi-periodic oscillation around regular Bardeen black holes in 4D Einstein-Gauss-Bonnet gravity

@article{65982,
   author = {Rayimbaev, Javlon and Bardiev, Dilshodbek and Abdujabbarov, Ahmadjon and Turaev, Yunus and Stuchlík, Zdeněk},
   article_number = {02},
   doi = {http://dx.doi.org/10.1142/S0218271822500043},
   keywords = {Modified gravity; quasi-periodic oscillations; Einstein Gauss Bonnet; regular black holes; nonlinear electrodynamics},
   language = {eng},
   issn = {0218-2718},
   journal = {International Journal of Modern Physics D},
   title = {Quasi-periodic oscillation around regular Bardeen black holes in 4D Einstein-Gauss-Bonnet gravity},
   url = {https://www.worldscientific.com/doi/abs/10.1142/S0218271822500043},
   volume = {31},
   year = {2022}
}

TY  - JOUR
ID  - 65982
AU  - Rayimbaev, Javlon - Bardiev, Dilshodbek - Abdujabbarov, Ahmadjon - Turaev, Yunus - Stuchlík, Zdeněk
PY  - 2022
TI  - Quasi-periodic oscillation around regular Bardeen black holes in 4D Einstein-Gauss-Bonnet gravity
JF  - International Journal of Modern Physics D
VL  - 31
IS  - 02
SP  - "2250004-1"-"2250004-19"
EP  - "2250004-1"-"2250004-19"
SN  - 02182718
KW  - Modified gravity
KW  - quasi-periodic oscillations
KW  - Einstein Gauss Bonnet
KW  - regular black holes
KW  - nonlinear electrodynamics
UR  - https://www.worldscientific.com/doi/abs/10.1142/S0218271822500043
N2  - In this paper, we explore the dynamics of test particles in spacetime around regular Bardeen black holes (BHs) in the novel four-dimensional Einstein-Gauss-Bonnet (4D EGB) theory. First, we analyze properties of the spacetime around the Bardeen BH with respect to the Gauss-Bonnet (GB) coupling parameter a, and we show the range of values of the BH charge and the parameter a that horizon exists as alpha/M-2 is an element of (-0.15869, 1) and g/M is an element of (0,0.886247), respectively. We also investigate the effects of the magnetic charge of the regular BH on innermost stable circular orbits (ISCOs) radius and efficiency of energy release from infalling test particles to the regular Bardeen BH in 4D EGB gravity. Moreover, fundamental frequencies such as Keplerian and harmonic oscillations are also studied with the applications of quasi-periodic oscillations (QP0s) where we proposed a method to test gravity theories through data from astrophysical observations of twin-peak QPOs in relativistic precession (RP) model. Finally, we show the dependence of the distance from the central BH to the orbit where twin-peak QPOs shine from the spin of Kerr BH, magnetic charge of Bardeen and Reissner-Nordstrom (RN) BHs, and GB coupling parameter.
ER  - 

RAYIMBAEV, Javlon, Dilshodbek BARDIEV, Ahmadjon ABDUJABBAROV, Yunus TURAEV a Zdeněk STUCHLÍK. Quasi-periodic oscillation around regular Bardeen black holes in 4D Einstein-Gauss-Bonnet gravity. \textit{International Journal of Modern Physics D}. 2022, roč.~31, č.~02, s.~''2250004-1''-''2250004-19'', 19 s. ISSN~0218-2718. Dostupné z: https://dx.doi.org/10.1142/S0218271822500043.