Detailed Information on Publication Record
2023
Stationary observers in Kerr-de Sitter spacetimes
PETRÁSEK, Martin, Jiří KOVÁŘ and Zdeněk STUCHLÍKBasic information
Original name
Stationary observers in Kerr-de Sitter spacetimes
Authors
PETRÁSEK, Martin (203 Czech Republic, belonging to the institution), Jiří KOVÁŘ (203 Czech Republic, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution)
Edition
International Journal of Modern Physics D, SG - Singapurská republika, 2023, 0218-2718
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
Singapore
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
RIV identification code
RIV/47813059:19630/23:A0000279
Organization unit
Institute of physics in Opava
UT WoS
001077432500001
Keywords in English
Stationary observerKerr-de Sitter spacetime;orbital velocity;inertial force;black hole;naked singularity
Tags
International impact, Reviewed
Změněno: 12/2/2024 09:58, Mgr. Pavlína Jalůvková
Abstract
V originále
In this paper, we present a study of basic classes of stationary observers orbiting in stationary and axially symmetric Kerr-de Sitter spacetimes. Along with proper definitions of these classes, we focus on their possible matching on particular circular orbits. Especially, we determine a number of such orbits in a given spacetime characterized by its rotational and cosmological parameters that leads to a comprehensive classification of the Kerr-de Sitter spacetimes. Studied profiles of orbital velocities of the observers and of forces keeping them on their orbits directly reflect complex structure of the Kerr-de Sitter spacetimes that is caused by a unique interplay of attraction and rotation of a central object and an ambient cosmic repulsion.