2020
General parametrization of black holes: The only parameters that matter
KONOPLYA, Roman and Olexandr ZHYDENKOBasic 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
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
References:
Impact factor
Impact factor: 4.643 in 2014
RIV identification code
RIV/47813059:19630/20:A0000024
Organization unit
Institute of physics in Opava
UT WoS
000537166300006
EID Scopus
2-s2.0-85087004670
Keywords in English
QUASI-NORMAL MODES
Tags
Tags
International impact, Reviewed
Links
GA19-03950S, research and development project.
Changed: 19/4/2021 13:59, Mgr. Pavlína Jalůvková
Abstract
In the original language
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.