Aschenbach effect for spinning particles in Kerr-(A)dS spacetime

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F21%3AA0000161" target="_blank" >RIV/47813059:19630/21:A0000161 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1140/epjc/s10052-021-09081-0" target="_blank" >https://link.springer.com/article/10.1140/epjc/s10052-021-09081-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-021-09081-0" target="_blank" >10.1140/epjc/s10052-021-09081-0</a>

Result language

angličtina

Original language name

Aschenbach effect for spinning particles in Kerr-(A)dS spacetime

Original language description

A non-monotonic behavior of the velocity gradient of a test particle revolving around a rapidly rotating black hole in the locally non-rotating frame of reference is known as the Aschenbach effect. This effect can serve as a distinguishing signature of rapidly rotating black holes, being potentially useful for the measurements of the astrophysical black hole spins. This paper is the generalization of our previous research to the motion of spinning particles around a rotating black hole with non-zero cosmological constant. We show that both the particle's spin s and the cosmological constant Lambda modify the critical value of the black hole spin ac, for which the Aschenbach effect can be observed; ac can increase or decrease depending on the signs of s and Lambda. We also found that the particle's spin s can mimic the effect of the cosmological constant Lambda for a given ac, causing thus a discrepancy in the measurements of s, Lambda and ac in the Aschenbach effect.

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

2021

Confidentiality

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

Name of the periodical

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Volume of the periodical

81

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

15

Pages from-to

„280-1“-„280-15“

UT code for WoS article

000636734500005

EID of the result in the Scopus database

2-s2.0-85103854884