J 2023

Test particle motion along equatorial circular orbits in the revisited Kerr-de Sitter spacetime

SLANÝ, Petr

Basic information

Original name

Test particle motion along equatorial circular orbits in the revisited Kerr-de Sitter spacetime

Authors

SLANÝ, Petr (203 Czech Republic, guarantor, belonging to the institution)

Edition

Physical Review D, 2023, 2470-0010

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

RIV identification code

RIV/47813059:19630/23:A0000286

Organization unit

Institute of physics in Opava

DOI

UT WoS

001097514200013

Keywords in English

test particle; equatorial circular orbits; kerr de Sitter spacetime

Tags

Tags

Reviewed
Změněno: 17/1/2024 09:51, Mgr. Pavlína Jalůvková

Abstract

V originále

Both circular and epicyclic motion of test particles along equatorial circular orbits in the revisited Kerrde Sitter spacetime are analyzed. We present relations for specific energy, specific angular momentum, and Keplerian angular velocity of particles on equatorial circular orbits, and discuss criteria for the existence and stability of such orbits giving limits on spacetime parameters. Finally, we discuss the epicyclic motion along equatorial circular orbits obtaining relations for radial and vertical epicyclic frequencies. The results are compared with those for standard Kerr-de Sitter geometry.