J
2022
How general is the strong cosmic censorship bound for quasinormal modes?
KONOPLYA, Roman and A. ZHIDENKO
Basic information
Original name
How general is the strong cosmic censorship bound for quasinormal modes?
Authors
KONOPLYA, Roman (804 Ukraine, belonging to the institution) and A. ZHIDENKO
Edition
Journal of Cosmology and Astroparticle Physics, GB - Spojené království Velké Británie a, 2022, 1475-7516
Other information
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
RIV identification code
RIV/47813059:19630/22:A0000238
Organization unit
Institute of physics in Opava
Keywords in English
quasinormal mode ;black hole;Cauchy horizon;gravitational waves / theory; gravity; modified gravity
Tags
International impact, Reviewed
V originále
Hod's proposal claims that the least damped quasinormal mode of a black hole must have the imaginary part smaller than half of the surface gravity at the event horizon. The Strong Cosmic Censorship in General Relativity implies that this bound must be even weaker: half of the surface gravity at the Cauchy horizon. The appealing question is whether these bounds are limited by the Einstein theory only? Here we will present numerical evidence that once the black hole size is much smaller than then the radius of the cosmological horizon, both the Hod's proposal and the strong cosmic censorship bound for quasinormal modes are satisfied for general spherically symmetric black holes in an arbitrary metric theory of gravity. The low-lying quasinormal frequencies have the universal behavior in this regime and do not depend on the near-horizon geometry, but only on the asymptotic parameters: the value of the cosmological constant and black hole mass.
Displayed: 26/11/2024 09:07