Accretion processes in black-hole spacetimes with a repulsive cosmological constant.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F01%3A20000005" target="_blank" >RIV/47813059:19240/01:20000005 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Accretion processes in black-hole spacetimes with a repulsive cosmological constant.
Original language description
The influence of a repulsive cosmological constant on accretion processes onto black holes is discussed. The steady, spherically symetric adiabatic inflow and outflow of perfect fluid is considered. Further, the attention is focused on the properties ofboth geometrically thin, Keplerian accretion disks and geometrically thick, toroidal disks having relevant pressure gradients. It is shown that nearby the static radius, where the gravitational attraction of a black hole is just balanced by the cosmological repulsion, the accretion toroidal disks have an outer cusp enabling outflow of matter from the disk. Behind the static radius the cosmological repulsion efficiently collimates jets that emanate along the rotation axis of the toroidal disk.
Czech name
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Czech description
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Project
<a href="/en/project/GA202%2F99%2F0261" target="_blank" >GA202/99/0261: Relativistic physics and astrophysics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of RAGtime 2/3: Workshops on black holes and neutron stars
ISBN
80-7248-131-2
ISSN
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e-ISSN
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Number of pages
38
Pages from-to
129-16
Publisher name
Silesian University at Opava
Place of publication
Opava
Event location
Opava, Czech republic
Event date
Nov 8, 2001
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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