About: Toroidal configurations of perfect fluid in the Reissner-Nordstrom-(anti-)de Sitter spacetimes

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Influence of cosmological constant on toroidal fluid configurations around charged spherically symmetric black holes and naked singularities is demostrated by study of perfect fluid tori with uniform distribution of specific angular momentum orbiting in the Reissner-Nordstrom-(anti-)de Sitter spacetimes. Toroidal configurations are allowed only in the space times admitting existence of stable circular geodesics. Configurations with marginally closed equipotential (equipressure) surfaces crossing itself in a cusp allow accretion (through the inner cusp) and/or excretion (through the outer cusp) of matter from the toroidal configuration. Detailed classification of the Reissner-Nordstrom-(anti-)de Sitter spacetimes according to properties of the marginally stable tori is given. It is demonstrated that in the Reissner-Nordstrom-de Sitter naked-singularity spacetimes an interesting phenomenon of doubled tori can exist enabling exchange of matter between two tori in both inward and outward directions. In naked-singularity spacetimes the accretion onto the central singularity is impossible due to existence of a potential barrier. Influence of cosmological constant on toroidal fluid configurations around charged spherically symmetric black holes and naked singularities is demostrated by study of perfect fluid tori with uniform distribution of specific angular momentum orbiting in the Reissner-Nordstrom-(anti-)de Sitter spacetimes. Toroidal configurations are allowed only in the space times admitting existence of stable circular geodesics. Configurations with marginally closed equipotential (equipressure) surfaces crossing itself in a cusp allow accretion (through the inner cusp) and/or excretion (through the outer cusp) of matter from the toroidal configuration. Detailed classification of the Reissner-Nordstrom-(anti-)de Sitter spacetimes according to properties of the marginally stable tori is given. It is demonstrated that in the Reissner-Nordstrom-de Sitter naked-singularity spacetimes an interesting phenomenon of doubled tori can exist enabling exchange of matter between two tori in both inward and outward directions. In naked-singularity spacetimes the accretion onto the central singularity is impossible due to existence of a potential barrier. (en)
Title	Toroidal configurations of perfect fluid in the Reissner-Nordstrom-(anti-)de Sitter spacetimes Toroidal configurations of perfect fluid in the Reissner-Nordstrom-(anti-)de Sitter spacetimes (en)
skos:prefLabel	Toroidal configurations of perfect fluid in the Reissner-Nordstrom-(anti-)de Sitter spacetimes Toroidal configurations of perfect fluid in the Reissner-Nordstrom-(anti-)de Sitter spacetimes (en)
skos:notation	RIV/47813059:19240/11:#0003872!RIV12-MSM-19240___
http://linked.open...avai/predkladatel	Filozoficko-přírodovědecká fakulta
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(LC06014), Z(MSM4781305903)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Stuchlík, Zdeněk Slaný, Petr Kučáková, Hana
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Slezská univerzita v Opavě / Filozoficko-přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	235563
http://linked.open...ai/riv/idVysledku	RIV/47813059:19240/11:#0003872
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	astrophysical fluid dynamics, GR black holes, accretion, dark energy theory (en)
http://linked.open.../riv/klicoveSlovo	GR black holes astrophysical fluid dynamics dark energy theory accretion
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[940301299424]
http://linked.open...i/riv/nazevZdroje	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
http://linked.open...in/vavai/riv/obor	BE
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Center for Theoretical Astrophysics
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Kučáková, Hana Stuchlík, Zdeněk Slaný, Petr
http://linked.open...n/vavai/riv/zamer	Relativistic and particle physics and its astrophysical application
issn	1475-7516
number of pages	38 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/1475-7516/2011/01/033
http://localhost/t...ganizacniJednotka	19240
is http://linked.open...avai/riv/vysledek of	Toroidal configurations of perfect fluid in the Reissner-Nordstrom-(anti-)de Sitter spacetimes Toroidal configurations of perfect fluid in the Reissner-Nordstrom-(anti-)de Sitter spacetimes

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