RAYIMBAEV, Javlon, Dilshodbek BARDIEV, Ahmadjon ABDUJABBAROV, Yunus TURAEV and Zdeněk STUCHLÍK. Quasi-periodic oscillation around regular Bardeen black holes in 4D Einstein-Gauss-Bonnet gravity. International Journal of Modern Physics D. 2022, vol. 31, No 02, p. "2250004-1"-"2250004-19", 19 pp. ISSN 0218-2718. Available from: https://dx.doi.org/10.1142/S0218271822500043.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name Quasi-periodic oscillation around regular Bardeen black holes in 4D Einstein-Gauss-Bonnet gravity
Authors RAYIMBAEV, Javlon, Dilshodbek BARDIEV (860 Uzbekistan, belonging to the institution), Ahmadjon ABDUJABBAROV, Yunus TURAEV and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution).
Edition International Journal of Modern Physics D, 2022, 0218-2718.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher Singapore
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19630/22:A0000190
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.1142/S0218271822500043
UT WoS 000763026800010
Keywords in English Modified gravity; quasi-periodic oscillations; Einstein Gauss Bonnet; regular black holes; nonlinear electrodynamics
Tags FÚ, RIV23, SGS-12-2019
Tags International impact, Reviewed
Links GA19-03950S, research and development project.
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 1/2/2023 13:26.
Abstract
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.
PrintDisplayed: 21/5/2024 03:14