Analytic expressions for grey-body factors of the general parametrized spherically symmetric black holes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F25%3AA0000432" target="_blank" >RIV/47813059:19630/25:A0000432 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1209/0295-5075/adbc17/pdf?utm_source=clarivate&getft_integrator=clarivate" target="_blank" >https://iopscience.iop.org/article/10.1209/0295-5075/adbc17/pdf?utm_source=clarivate&getft_integrator=clarivate</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1209/0295-5075/adbc17" target="_blank" >10.1209/0295-5075/adbc17</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analytic expressions for grey-body factors of the general parametrized spherically symmetric black holes

Popis výsledku v původním jazyce

light of the recently discovered connection between grey-body factors and quasi normal ringing, we derive analytic expressions for the grey-body factors of generic parametrized spherically symmetric and asymptotically flat black holes. These expressions are presented as expansions in terms of the inverse multipole number and the coefficients of the parametrization. The obtained analytic formulas serve as good approximations whenever the deviation from the Schwarzschild geometry is not very large. We demonstrate that the primary parameter determining the grey-body factors is the deviation of the event horizon radius from its Schwarzschild value, while the higher-order coefficients of the parametrization, which govern the near-horizon geometry, are much less significant. This finding is consistent with recent observations that grey-body factors are considerably more stable against small deformations of the near-horizon geometry than quasinormal modes.

Název v anglickém jazyce

Analytic expressions for grey-body factors of the general parametrized spherically symmetric black holes

Popis výsledku anglicky

light of the recently discovered connection between grey-body factors and quasi normal ringing, we derive analytic expressions for the grey-body factors of generic parametrized spherically symmetric and asymptotically flat black holes. These expressions are presented as expansions in terms of the inverse multipole number and the coefficients of the parametrization. The obtained analytic formulas serve as good approximations whenever the deviation from the Schwarzschild geometry is not very large. We demonstrate that the primary parameter determining the grey-body factors is the deviation of the event horizon radius from its Schwarzschild value, while the higher-order coefficients of the parametrization, which govern the near-horizon geometry, are much less significant. This finding is consistent with recent observations that grey-body factors are considerably more stable against small deformations of the near-horizon geometry than quasinormal modes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

EPL

ISSN

0295-5075

e-ISSN

—

Svazek periodika

149

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

„69004-1“-„69004-7“

Kód UT WoS článku

001482973300001

EID výsledku v databázi Scopus

2-s2.0-105002752730