SLANÝ, Petr. Test particle motion along equatorial circular orbits in the revisited Kerr-de Sitter spacetime. Physical Review D. 2023, vol. 108, No 8, p. "084026-1"-"084026-9", 9 pp. ISSN 2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.108.084026.
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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
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19630/23:A0000286
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.1103/PhysRevD.108.084026
UT WoS 001097514200013
Keywords in English test particle; equatorial circular orbits; kerr de Sitter spacetime
Tags RIV24, UF
Tags Reviewed
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 17/1/2024 09:51.
Abstract
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.
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