Detailed Information on Publication Record
2017
Slowly decaying resonances of massive scalar fields around Schwarzschild-de Sitter black holes
TOSHMATOV, Bobir and Zdeněk STUCHLÍKBasic information
Original name
Slowly decaying resonances of massive scalar fields around Schwarzschild-de Sitter black holes
Authors
TOSHMATOV, Bobir (860 Uzbekistan, guarantor, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution)
Edition
European Physical Journal Plus, 2017, 2190-5444
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
Germany
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
RIV identification code
RIV/47813059:19240/17:A0000012
Organization unit
Faculty of Philosophy and Science in Opava
UT WoS
000406285300001
Keywords in English
quasinormal modes; massive scalar fields; black holes; cosmic repulsion
Tags
International impact, Reviewed
Links
GB14-37086G, research and development project.
Změněno: 9/4/2018 05:29, RNDr. Jan Hladík, Ph.D.
Abstract
V originále
We study in special limiting cases quasinormal modes of massive scalar fields in the Schwarzschild-de Sitter black hole backgrounds. We determine the lower limit on the mass parameter of the scalar field that allows the waves with quasinormal frequencies to propagate to infinity, showing that it depends on the spacetime parameters only. Then we discuss in the large multipole number limit quasinormal modes, whose frequencies can be directly related to the unstable circular photon geodesics. In the large scalar mass approximation, we demonstrate the new interesting phenomenon of slowly decaying resonances, that are strongly related to the maximum of the effective potential of the massive scalar field, which is located at the static radius of the Schwarzschild-de Sitter spacetimes, where the cosmic repulsion is just balanced by the black hole attraction.