Stationary observers in Kerr-de Sitter spacetimes

@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.