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

Authors

KOVÁŘ, Jiří, Petr SLANÝ and Zdeněk STUCHLÍK

Edition

Classical and Quantum Gravity, GB - Spojené království Velké Británie a, 2009, 0264-9381

Other information

Language

English

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

DOI

http://dx.doi.org/10.1088/0264-9381/26/21/215013

UT WoS

000270903900014

Keywords in English

Cosmological constant, accretion tori, pseudonewtonian approach

Tags

UF

Tags

International impact, Reviewed

Links

MSM4781305903, plan (intention).
Změněno: 21/12/2020 14:57, Mgr. Pavlína Jalůvková

Abstract

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.
Displayed: 25/12/2024 17:51