Radiative characteristics of accretion disks around rotating regular black holes
Kurmanov Y. Konysbayev T. Suliyeva G. Ikhsan G. Saiyp N. Rabigulova G. Urazalina A.
20 June 2024al-Farabi Kazakh State National University
International Journal of Mathematics and Physics
2024#15Issue 157 - 67 pp.
Our research focuses on examining the characteristics of thin accretion disks encircling rotating regular black holes. In this study, we investigate the important features of accretion disks surrounding Bardeen’s regular black holes, which play a crucial role in addressing the singularity issue. The horizon configuration of rotating Bardeen black holes is analyzed in details, as well as the innermost stable circular orbits related to this spacetime. The primary goal is to derive quantitively the radiative flux, differential and spectral luminosities of the accretion disk. Within the specified gravitational field, particularly, by taking the parameter r0* > 0 and fixing the j = 0.2, our findings show that the corresponding accretion disk’s luminosity exceeds that one predicted by the Kerr metric at identical value of spin parameter (j = 0.2). Making the juxtaposition of Bardeen’s black hole parameter r0* with the spin parameter j of the Kerr black hole we reveal that the spacetime corresponding to the non-rotating Bardeen black holes, in some certain cases, can imitate the Kerr spacetime.
angular momentum , angular velocity , energy and radiative flux , rotating Bardeen spacetime
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National Nanotechnology Laboratory of Open Type, Almaty, Kazakhstan
Department of Theoretical and Nuclear Physics Al-Farabi Kazakh National University, Almaty, Kazakhstan
International Engineering Technological University, Almaty, Kazakhstan
Fesenkov Astrophysical Institute, Almaty, Kazakhstan
Institute of Nuclear Physics, Almaty, Kazakhstan
National Nanotechnology Laboratory of Open Type
Department of Theoretical and Nuclear Physics Al-Farabi Kazakh National University
International Engineering Technological University
Fesenkov Astrophysical Institute
Institute of Nuclear Physics
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