Pseudo-Newtonian and general relativistic barotropic tori in Schwarzschild-de Sitter spacetimes

@article{44261,
   author = {Kovář, Jiří and Slaný, Petr and Stuchlík, Zdeněk},
   article_location = {GB - Spojené království Velké Británie a},
   article_number = {21},
   doi = {http://dx.doi.org/10.1088/0264-9381/26/21/215013},
   keywords = {Cosmological constant, accretion tori, pseudonewtonian approach},
   language = {eng},
   issn = {0264-9381},
   journal = {Classical and Quantum Gravity},
   title = {Pseudo-Newtonian and general relativistic barotropic tori in Schwarzschild-de Sitter spacetimes},
   volume = {26},
   year = {2009}
}

TY  - JOUR
ID  - 44261
AU  - Kovář, Jiří - Slaný, Petr - Stuchlík, Zdeněk
PY  - 2009
TI  - Pseudo-Newtonian and general relativistic barotropic tori in Schwarzschild-de Sitter spacetimes
JF  - Classical and Quantum Gravity
VL  - 26
IS  - 21
SN  - 02649381
KW  - Cosmological constant, accretion tori, pseudonewtonian approach
N2  - Pseudo-Newtonian gravitational potential introduced in spherically symmetric black-hole spacetimes with a repulsive cosmological constant is tested for equilibrium toroidal configurations of barotropic perfect fluid orbiting the black holes. Shapes and potential depths are determined for the marginally stable barotropic tori with uniform distribution of specific angular momentum, using both the pseudo-Newtonian and fully relativistic approach. For the adiabatic (isoentropic) perfect fluid, temperature profiles, mass-density and pressure profiles and total masses of pseudo-Newtonian and relativistic tori are compared providing important information on the relevance of the test-disc approximation in both the approaches.
ER  - 

KOVÁŘ, Jiří, Petr SLANÝ a Zdeněk STUCHLÍK. Pseudo-Newtonian and general relativistic barotropic tori in Schwarzschild-de Sitter spacetimes. \textit{Classical and Quantum Gravity}. GB - Spojené království Velké Británie a, roč.~26, č.~21, 35 s. ISSN~0264-9381. doi:10.1088/0264-9381/26/21/215013. 2009.