TOSHMATOV, Bobir, Zdeněk STUCHLÍK, Bobomurot AHMEDOV and Daniele MALAFARINA. Relaxations of perturbations of spacetimes in general relativity coupled to nonlinear electrodynamics. Physical Review D. 2019, vol. 99, No 6, p. "064043-1"-"064043-9", 9 pp. ISSN 2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.99.064043.
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Basic information
Original name Relaxations of perturbations of spacetimes in general relativity coupled to nonlinear electrodynamics
Authors TOSHMATOV, Bobir (203 Czech Republic, guarantor, belonging to the institution), Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution), Bobomurot AHMEDOV (860 Uzbekistan) and Daniele MALAFARINA (380 Italy).
Edition Physical Review D, 2019, 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/47813059:19240/19:A0000422
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1103/PhysRevD.99.064043
UT WoS 000462918600003
Keywords in English black holes; perturbations; nonlinear electrodynamics; quasinormal frequencies
Tags Erasmus, FÚ, GA19-03950S, RCTPA, RIVOK
Tags International impact, Reviewed
Links GA19-03950S, research and development project.
Changed by Changed by: Ing. Petra Skoumalová, učo 50554. Changed: 21/4/2020 10:29.
Abstract
Three well-known exact regular solutions of general relativity coupled to nonlinear electrodynamics (NED), namely the Maxwellian, Bardeen, and Hayward regular spacetimes, which can describe either a regular black hole or a geometry without horizons, have been considered. Relaxation times for the scalar, electromagnetic (EM) and gravitational perturbations of black holes and no-horizon spacetimes have been estimated in comparison with the ones of the Schwarzschild and Reissner-Nordstrom spacetimes. It has been shown that the considered geometries in general relativity coupled to the NED have never-vanishing circular photon orbits, and on account of this fact, these spacetimes always oscillate the EM perturbations with quasinormal frequencies. Moreover, we have shown that the EM perturbations in the eikonal regime can be a powerful tool to confirm (i) that the light rays do not follow null geodesics in the NED by the relaxation rates and (ii) if the underlying solution has a correct weak field limit to the Maxwell electrodynamics by the angular velocity of the circular photon orbit.
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