J
2020
Echoes in brane worlds: Ringing at a black hole-wormhole transition
BRONNIKOV, Kirill A. and Roman KONOPLYA
Basic information
Original name
Echoes in brane worlds: Ringing at a black hole-wormhole transition
Authors
BRONNIKOV, Kirill A. and
Roman KONOPLYA (804 Ukraine, belonging to the institution)
Edition
Physical Review D, 2020, 2470-0010
Other information
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
RIV identification code
RIV/47813059:19630/20:A0000033
Organization unit
Institute of physics in Opava
Keywords in English
NORMAL-MODES
Tags
International impact, Reviewed
Links
GA19-03950S, research and development project.
V originále
Echoes are known as modifications of the usual quasinormal ringing of a black hole at late times because of the deviation of space-time from the initial black hole geometry in a small region near its event horizon. We consider a class of brane-world model solutions of the Shiromizu-Maeda-Sasaki equations, which describe both black holes and wormholes and interpolate between them via a continuous parameter. In this way the brane-world scenario provides a natural model for wormholes mimicking the black hole behavior if the continuous parameter is chosen near the threshold with a black hole solution. We show that in the vicinity of this threshold interpolating between black holes and wormholes, quasinormal ringing of the wormholes at the initial stage is indistinguishable from that of the black holes with nearby values of the above parameter, but at later times the signal is modified by intensive echoes. We notice that the black hole mimickers that are wormholes near the threshold have the largest quality factor and are therefore the best oscillators among the considered examples.
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