KONOPLYA, Roman and A. ZHIDENKO. Bernstein spectral method for quasinormal modes of a generic black hole spacetime and application to instability of dilaton-de Sitter solution. Physical Review D. 2023, vol. 107, No 4, p. "044009-1"-"044009-9", 9 pp. ISSN 2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.107.044009.
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Basic information
Original name Bernstein spectral method for quasinormal modes of a generic black hole spacetime and application to instability of dilaton-de Sitter solution
Authors KONOPLYA, Roman (804 Ukraine, belonging to the institution) and A. ZHIDENKO.
Edition Physical Review D, 2023, 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/47813059:19630/23:A0000259
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.1103/PhysRevD.107.044009
UT WoS 000933241200005
Keywords in English Mathematica code; quasinormal frequencies;Bernstein spectral method;black holes
Tags RIV24, UF
Tags International impact, Reviewed
Links GA19-03950S, research and development project.
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 13/2/2024 14:34.
Abstract
We present the improved Mathematica code which computes quasinormal frequencies with the help of the Bernstein spectral method for a general class of black holes, allowing for asymptotically flat, de Sitter or anti-de Sitter asymptotic. The method is especially efficient when searching for purely imaginary and unstable modes, and here it is used for detecting the instability region of a charged scalar field in the background of the charged asymptotically de Sitter dilatonic black hole. We show that the instability has superradiant nature and the dilaton field essentially influences the region of instability.
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