On black hole surface gravity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F23%3AA0000307" target="_blank" >RIV/47813059:19630/23:A0000307 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1140/epjc/s10052-023-11345-w" target="_blank" >https://link.springer.com/article/10.1140/epjc/s10052-023-11345-w</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-023-11345-w" target="_blank" >10.1140/epjc/s10052-023-11345-w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On black hole surface gravity

Popis výsledku v původním jazyce

We analyze the properties of the black hole surface gravity by using an alternative approach based upon the use of light surfaces that are represented by certain characteristic frequencies. To this end, we rewrite the Kerr line element in terms of the characteristic frequencies, which allows us to obtain copies of the Kerr geometries (black hole-clusters) as the parameters vary. In particular, we replace the spin parameter a = J/M with the corresponding characteristic frequencies so that the line element describes only black holes. This new representation is particularly adapted to analyze how the surface gravity behaves as the black hole passes from one v state to another. It turns out that the spins a = v3/2M and a = 1/v 2 M for black holes and a/M = v9/8 for naked singularities are of particular relevance for the analysis of the surface gravity properties.

Název v anglickém jazyce

On black hole surface gravity

Popis výsledku anglicky

We analyze the properties of the black hole surface gravity by using an alternative approach based upon the use of light surfaces that are represented by certain characteristic frequencies. To this end, we rewrite the Kerr line element in terms of the characteristic frequencies, which allows us to obtain copies of the Kerr geometries (black hole-clusters) as the parameters vary. In particular, we replace the spin parameter a = J/M with the corresponding characteristic frequencies so that the line element describes only black holes. This new representation is particularly adapted to analyze how the surface gravity behaves as the black hole passes from one v state to another. It turns out that the spins a = v3/2M and a = 1/v 2 M for black holes and a/M = v9/8 for naked singularities are of particular relevance for the analysis of the surface gravity properties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

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

European Physical Journal C

ISSN

1434-6044

e-ISSN

—

Svazek periodika

83

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

42

Strana od-do

„370-1“-„370-42“

Kód UT WoS článku

000988975200002

EID výsledku v databázi Scopus

2-s2.0-85158824335