Expanding microscopic black holes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00139111" target="_blank" >RIV/00216224:14310/24:00139111 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1142/S0218271824500184" target="_blank" >https://doi.org/10.1142/S0218271824500184</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S0218271824500184" target="_blank" >10.1142/S0218271824500184</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Expanding microscopic black holes

Popis výsledku v původním jazyce

Two interesting hypotheses about black holes have been proposed. The older one states that microscopic black holes can be accountable for the observed dark matter density. The newer one states that black holes are coupled to the expansion of the universe. Here, we combine those ideas and investigate the behavior of expanding microscopic black holes. We observe two temperatures at which the radiation balances the expansion. While one of the balance points might be important in the analysis of primordial scenarios, the other would lead to a strong diffuse gamma radiation background, which is contradicted by the lack of observations. This establishes another indirect evidence disfavoring the hypothesis of cosmological coupling of black holes.

Název v anglickém jazyce

Expanding microscopic black holes

Popis výsledku anglicky

Two interesting hypotheses about black holes have been proposed. The older one states that microscopic black holes can be accountable for the observed dark matter density. The newer one states that black holes are coupled to the expansion of the universe. Here, we combine those ideas and investigate the behavior of expanding microscopic black holes. We observe two temperatures at which the radiation balances the expansion. While one of the balance points might be important in the analysis of primordial scenarios, the other would lead to a strong diffuse gamma radiation background, which is contradicted by the lack of observations. This establishes another indirect evidence disfavoring the hypothesis of cosmological coupling of black holes.

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

Rok uplatnění

2024

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

1793-6594

Svazek periodika

33

Číslo periodika v rámci svazku

03n04

Stát vydavatele periodika

SG - Singapurská republika

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

001214628500006

EID výsledku v databázi Scopus

2-s2.0-85193063026