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@article{44086,
author = {Stuchlík, Zdeněk},
article_location = {US - Spojené státy americké},
article_number = {8},
doi = {http://dx.doi.org/10.1142/S0217732305016865},
keywords = {Accretion, accretion discs, black-hole physics, relativity, cosmological constant, jets, radii},
language = {eng},
issn = {0217-7323},
journal = {Modern Physics Letters A},
title = {Influence of the relict cosmological constant on accretion discs},
volume = {20},
year = {2005}
}
TY - JOUR
ID - 44086
AU - Stuchlík, Zdeněk
PY - 2005
TI - Influence of the relict cosmological constant on accretion discs
JF - Modern Physics Letters A
VL - 20
IS - 8
SP - 561-575
EP - 561-575
SN - 02177323
KW - Accretion, accretion discs, black-hole physics, relativity, cosmological constant, jets, radii
N2 - Surprisingly, the relict cosmological constant has a crucial influence on properties of accretion discs orbiting black holes in quasars and active galactic nuclei. We show it by considering basic properties of both the geometrically thin and thick accretion discs in the Kerr - de Sitter black-hole (naked-singularity) spacetimes. Both thin and thick discs must have an outer edge allowing out ow of matter into the outer space, located nearby the so called static radius, where the gravitational attractionof a black hole is balanced by the cosmological repulsion. Jets produced by thick discs can be significantly collimated after crossing the static radius. Extension of discs in quasars is comparable with extension of the associated galaxies, indicating apossibility that the relict cosmological constant puts an upper limit on extension of galaxies.
ER -
STUCHLÍK, Zdeněk. Influence of the relict cosmological constant on accretion discs. \textit{Modern Physics Letters A}. US - Spojené státy americké, 2005, vol.~20, No~8, p.~561-575, 14 pp. ISSN~0217-7323. Available from: https://dx.doi.org/10.1142/S0217732305016865.
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