J
2009
Pseudo-Newtonian and general relativistic barotropic tori in Schwarzschild-de Sitter spacetimes
KOVÁŘ, Jiří, Petr SLANÝ and Zdeněk STUCHLÍK
Basic information
Original name
Pseudo-Newtonian and general relativistic barotropic tori in Schwarzschild-de Sitter spacetimes
Edition
Classical and Quantum Gravity, GB - Spojené království Velké Británie a, 2009, 0264-9381
Other information
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Confidentiality degree
není předmětem státního či obchodního tajemství
Organization unit
Faculty of Philosophy and Science in Opava
Keywords in English
Cosmological constant, accretion tori, pseudonewtonian approach
Tags
International impact, Reviewed
Links
MSM4781305903, plan (intention).
V originále
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.
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