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

Language

English

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

References:

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

Tags

International impact, Reviewed
Změněno: 8/3/2023 12:08, Mgr. Pavlína Jalůvková

Abstract

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.