TOSHMATOV, Bobir, Zdeněk STUCHLÍK and Bobomurat AHMEDOV. Electromagnetic perturbations of black holes in general relativity coupled to nonlinear electrodynamics: Polar perturbations. Physical Review D. 2018, vol. 98, No 8, p. "085021-1"-"085021-11", 11 pp. ISSN 2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.98.085021.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name Electromagnetic perturbations of black holes in general relativity coupled to nonlinear electrodynamics: Polar perturbations
Authors TOSHMATOV, Bobir (860 Uzbekistan, guarantor, belonging to the institution), Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution) and Bobomurat AHMEDOV (860 Uzbekistan).
Edition Physical Review D, 2018, 2470-0010.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19240/18:A0000246
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1103/PhysRevD.98.085021
UT WoS 000448599200014
Keywords in English charged black holes; electromagnetic perturbations; nonlinear electrodynamics; polar perturbations
Tags International impact, Reviewed
Links GB14-37086G, research and development project.
Changed by Changed by: RNDr. Jan Hladík, Ph.D., učo 25379. Changed: 4/4/2019 12:18.
Abstract
The axial electromagnetic (EM) perturbations of the black hole (BH) solutions in general relativity coupled to nonlinear electrodynamics (NED) were studied for both electrically and magnetically charged BHs, assuming that the EM perturbations do not alter the spacetime geometry in our preceding paper [Phys. Rev. D 97, 084058 (2018)]. Here, as a continuation of that work, the formalism for the polar EM perturbations of the BHs in general relativity coupled to the NED is presented. We show that the quasinormal modes (QNMs) spectra of polar EM perturbations of the electrically and magnetically charged BHs in the NED are not isospectral, contrary to the case of the standard Reissner-Nordstrom BHs in the classical linear electrodynamics. It is shown by the detailed study of QNMs properties in the eikonal approximation that the EM perturbations can be a powerful tool to confirm that in the NED light ray does not follow the null geodesics of the spacetime. By specifying the NED model and comparing axial and polar EM perturbations of the electrically and magnetically charged BHs, it is shown that QNM spectra of the axial EM perturbations of magnetically (electrically) charged BH and polar EM perturbations of the electrically (magnetically) charged BH are isospectral, i.e., omega^{ax}_{mag} approximate to omega^{pol}_{el} (omega^{pol}_{mag} approximate to omega^{ax}_{el}).
PrintDisplayed: 4/5/2024 07:49