The sound of the event horizon

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F23%3AA0000284" target="_blank" >RIV/47813059:19630/23:A0000284 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.worldscientific.com/doi/10.1142/S0218271823420142" target="_blank" >https://www.worldscientific.com/doi/10.1142/S0218271823420142</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S0218271823420142" target="_blank" >10.1142/S0218271823420142</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The sound of the event horizon

Popis výsledku v původním jazyce

During the ringdown phase of a gravitational signal emitted by a black hole, the least damped quasinormal frequency dominates. If modifications to Einstein's theory induce noticeable deformations of the black-hole geometry only near the event horizon, the fundamental mode remains largely unaffected. However, even a small change near the event horizon can significantly impact the first few overtones, providing a means to probe the geometry of the event horizon. Overtones are stable against small deformations of spacetime at a distance from the black hole, allowing the event horizon to be distinguished from the surrounding environment. In contrast to echoes, overtones make a much larger energy contribution. These findings open up new avenues for future observations.

Název v anglickém jazyce

The sound of the event horizon

Popis výsledku anglicky

During the ringdown phase of a gravitational signal emitted by a black hole, the least damped quasinormal frequency dominates. If modifications to Einstein's theory induce noticeable deformations of the black-hole geometry only near the event horizon, the fundamental mode remains largely unaffected. However, even a small change near the event horizon can significantly impact the first few overtones, providing a means to probe the geometry of the event horizon. Overtones are stable against small deformations of spacetime at a distance from the black hole, allowing the event horizon to be distinguished from the surrounding environment. In contrast to echoes, overtones make a much larger energy contribution. These findings open up new avenues for future observations.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

International Journal of Modern Physics D

ISSN

0218-2718

e-ISSN

—

Svazek periodika

32

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

SG - Singapurská republika

Počet stran výsledku

5

Strana od-do

„2342014-1“-„2342014-5“

Kód UT WoS článku

001039221500003

EID výsledku v databázi Scopus

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