KONOPLYA, Roman and Olexandr ZHYDENKO. General parametrization of black holes: The only parameters that matter. Physical Review D. US - Spojené státy americké, 2020, vol. 101, No 12, p. "124004-1"-"124004-7", 7 pp. ISSN 1550-7998. Available from: https://dx.doi.org/10.1103/PhysRevD.101.124004.
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Basic information
Original name General parametrization of black holes: The only parameters that matter
Authors KONOPLYA, Roman (804 Ukraine, belonging to the institution) and Olexandr ZHYDENKO (804 Ukraine).
Edition Physical Review D, US - Spojené státy americké, 2020, 1550-7998.
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/47813059:19630/20:A0000024
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.1103/PhysRevD.101.124004
UT WoS 000537166300006
Keywords in English QUASI-NORMAL MODES
Tags FÚ, FÚ2020, GA19-03950S, RIV21
Tags International impact, Reviewed
Links GA19-03950S, research and development project.
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 19/4/2021 13:59.
Abstract
The general parametrization of a black-hole spacctime in arbitrary metric theories of gravity includes an infinite set of parameters. It is natural to suppose that essential astrophysically observable quantities, such as quasinormal modes, parameters of shadow, electromagnetic radiation and accreting matter in the vicinity of a black hole, must depend mostly on a few of these parameters. Starting from the parametrization for spherically symmetric configurations in the form of an infinite continued fraction, we suggest a compact representation of the asymptotically flat spherically symmetric and slowly rotating black holes in terms of only three and four parameters respectively. A subclass of arbitrarily rotating black holes belonging to the Carter family can also be parametrized by only four parameters. This approximate representation of a black-hole metric should allow one to describe physical observables in the region of strong gravity.
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