SLANÝ, Petr and Zdeněk STUCHLÍK. Equatorial circular orbits in Kerr-Newman-de Sitter spacetimes. European Physical Journal C. 2020, vol. 80, No 6, p. "587-1"-"587-15", 15 pp. ISSN 1434-6044. Available from: https://dx.doi.org/10.1140/epjc/s10052-020-8142-0.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name Equatorial circular orbits in Kerr-Newman-de Sitter spacetimes
Authors SLANÝ, Petr (203 Czech Republic, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution).
Edition European Physical Journal C, 2020, 1434-6044.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10303 Particles and field physics
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19630/20:A0000072
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.1140/epjc/s10052-020-8142-0
UT WoS 000546247100011
Keywords in English MOTION; KERR-(ANTI); SUPERNOVAE; EVOLUTION; FIELD
Tags FÚ, FÚ2020, RIV21
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 23/3/2021 22:30.
Abstract
Circular motion of test particles in the equatorial plane of the Kerr-Newman-de Sitter (KNdS) spacetime is analyzed for both black-hole and naked-singularity backgrounds. We present relations for specific energy, specific angular momentum and Keplerian angular velocity of a particle on equatorial circular orbit, and discuss criteria for the existence of such orbits giving limits on spacetime parameters. The orientation of motion along circular orbits is discussed from the point of view of locally non-rotating frames. Finally, we discuss the stability of circular motion against radial perturbations and determine limits on the existence of stable circular orbits, as well as the structure of stability regions in KNdS spacetimes.
PrintDisplayed: 5/5/2024 09:28