PETRÁSEK, Martin, Jiří KOVÁŘ a Zdeněk STUCHLÍK. Stationary observers in Kerr-de Sitter spacetimes. International Journal of Modern Physics D. SG - Singapurská republika, 2023, roč. 32, č. 12, s. "2350084-1"-"2350084-18", 18 s. ISSN 0218-2718. Dostupné z: https://dx.doi.org/10.1142/S0218271823500840. |
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@article{75041, author = {Petrásek, Martin and Kovář, Jiří and Stuchlík, Zdeněk}, article_location = {SG - Singapurská republika}, article_number = {12}, doi = {http://dx.doi.org/10.1142/S0218271823500840}, keywords = {Stationary observerKerr-de Sitter spacetime;orbital velocity;inertial force;black hole;naked singularity}, language = {eng}, issn = {0218-2718}, journal = {International Journal of Modern Physics D}, title = {Stationary observers in Kerr-de Sitter spacetimes}, url = {https://www.worldscientific.com/doi/10.1142/S0218271823500840}, volume = {32}, year = {2023} }
TY - JOUR ID - 75041 AU - Petrásek, Martin - Kovář, Jiří - Stuchlík, Zdeněk PY - 2023 TI - Stationary observers in Kerr-de Sitter spacetimes JF - International Journal of Modern Physics D VL - 32 IS - 12 SP - "2350084-1"-"2350084-18" EP - "2350084-1"-"2350084-18" SN - 02182718 KW - Stationary observerKerr-de Sitter spacetime;orbital velocity;inertial force;black hole;naked singularity UR - https://www.worldscientific.com/doi/10.1142/S0218271823500840 N2 - 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. ER -
PETRÁSEK, Martin, Jiří KOVÁŘ a Zdeněk STUCHLÍK. Stationary observers in Kerr-de Sitter spacetimes. \textit{International Journal of Modern Physics D}. SG - Singapurská republika, 2023, roč.~32, č.~12, s.~''2350084-1''-''2350084-18'', 18 s. ISSN~0218-2718. Dostupné z: https://dx.doi.org/10.1142/S0218271823500840.
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