TOSHMATOV, Bobir, Cosimo BAMBI, Bobomurat AHMEDOV, Zdeněk STUCHLÍK and Jan SCHEE. Scalar perturbations of nonsingular nonrotating black holes in conformal gravity. Physical Review D. 2017, vol. 96, No 6, p. „064028-1“-„064028-10“, 10 pp. ISSN 2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.96.064028.
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Basic information
Original name Scalar perturbations of nonsingular nonrotating black holes in conformal gravity
Authors TOSHMATOV, Bobir (860 Uzbekistan, guarantor, belonging to the institution), Cosimo BAMBI (380 Italy), Bobomurat AHMEDOV (860 Uzbekistan), Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution) and Jan SCHEE (203 Czech Republic, belonging to the institution).
Edition Physical Review D, 2017, 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 Physical Review D
RIV identification code RIV/47813059:19240/17:A0000009
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1103/PhysRevD.96.064028
UT WoS 000411174700003
Keywords in English scalar perturbations; black holes; conformal gravity
Tags International impact, Reviewed
Links GB14-37086G, research and development project.
Changed by Changed by: RNDr. Jan Hladík, Ph.D., učo 25379. Changed: 5/4/2018 16:00.
Abstract
We study scalar and electromagnetic perturbations of a family of nonsingular nonrotating black hole spacetimes that are solutions in a large class of conformally invariant theories of gravity. The effective potential for scalar perturbations depends on the exact form of the scaling factor. Electromagnetic perturbations do not feel the scaling factor, and the corresponding quasinormal mode spectrum is the same as in the Schwarzschild metric. We find that these black hole metrics are stable under scalar and electromagnetic perturbations. Assuming that the quasinormal mode spectrum for scalar perturbations is not too different from that for gravitational perturbations, we can expect that the calculation of the quasinormal mode spectrum and the observation with gravitational wave detectors of quasinormal modes from astrophysical black holes can constrain the scaling factor and test these solutions.
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