Correspondence between grey-body factors and quasinormal modes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F24%3AA0000372" target="_blank" >RIV/47813059:19630/24:A0000372 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1475-7516/2024/09/068" target="_blank" >https://iopscience.iop.org/article/10.1088/1475-7516/2024/09/068</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1475-7516/2024/09/068" target="_blank" >10.1088/1475-7516/2024/09/068</a>

Result language

angličtina

Original language name

Correspondence between grey-body factors and quasinormal modes

Original language description

Quasinormal modes and grey-body factors are spectral characteristics corresponding to different boundary conditions: the former imply purely outgoing waves to the event horizon and infinity, while the latter allow for an incoming wave from the horizon, thus describing a scattering problem. Nevertheless, we show that there is a link between these two characteristics. We establish an approximate correspondence between the quasinormal modes and grey-body factors, which becomes exact in the high-frequency (eikonal) regime. We show that, in the eikonal regime, the grey-body factors of spherically symmetric black holes can be remarkably simply expressed via the fundamental quasinormal mode, while at smaller &amp; ell;, the correction terms include values of the overtones. This might be interesting in the context of the recently observed connection between grey-body factors and the amplitudes of gravitational waves from black holes. The correspondence might explain why grey-body factors are more stable, i.e. less sensitive, than higher overtones to small deformation of the effective potential.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Cosmology and Astroparticle Physics

ISSN

1475-7516

e-ISSN

—

Volume of the periodical

2024

Issue of the periodical within the volume

9

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

„068-1“-„068-11“

UT code for WoS article

001329244000010

EID of the result in the Scopus database

2-s2.0-85205673245