About: Appearance of Keplerian discs orbiting Kerr superspinars

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We study optical phenomena related to the appearance of Keplerian accretion discs orbiting Kerr superspinars predicted by string theory. The superspinar exterior is described by standard Kerr naked singularity geometry breaking the black hole limit on the internal angular momentum (spin). We construct local photon escape cones for a variety of orbiting sources that enable us to determine the superspinars silhouette in the case of distant observers. We show that the superspinar silhouette depends strongly on the assumed edge where the external Kerr spacetime is joined to the internal spacetime governed by string theory and significantly differs from the black hole silhouette. The appearance of the accretion disc is strongly dependent on the value of the superspinar spin in both their shape and frequency shift profile. We study optical phenomena related to the appearance of Keplerian accretion discs orbiting Kerr superspinars predicted by string theory. The superspinar exterior is described by standard Kerr naked singularity geometry breaking the black hole limit on the internal angular momentum (spin). We construct local photon escape cones for a variety of orbiting sources that enable us to determine the superspinars silhouette in the case of distant observers. We show that the superspinar silhouette depends strongly on the assumed edge where the external Kerr spacetime is joined to the internal spacetime governed by string theory and significantly differs from the black hole silhouette. The appearance of the accretion disc is strongly dependent on the value of the superspinar spin in both their shape and frequency shift profile. (en)
Title	Appearance of Keplerian discs orbiting Kerr superspinars Appearance of Keplerian discs orbiting Kerr superspinars (en)
skos:prefLabel	Appearance of Keplerian discs orbiting Kerr superspinars Appearance of Keplerian discs orbiting Kerr superspinars (en)
skos:notation	RIV/47813059:19240/10:#0002994!RIV11-MSM-19240___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/09/0772), P(LC06014), Z(MSM4781305903)
http://linked.open...iv/cisloPeriodika	21
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Stuchlík, Zdeněk Schee, Jan
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	247364
http://linked.open...ai/riv/idVysledku	RIV/47813059:19240/10:#0002994
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	NONZERO COSMOLOGICAL CONSTANT, QUASI-PERIODIC OSCILLATIONS, BLACK-HOLE SPIN, HIGH-FREQUENCY QPOS, NAKED-SINGULARITY, GRAVITATIONAL COLLAPSE, ACCRETION DISK, COSMIC CENSORSHIP, RESONANCE MODEL, NULL GEODESICS (en)
http://linked.open.../riv/klicoveSlovo	HIGH-FREQUENCY QPOS NAKED-SINGULARITY QUASI-PERIODIC OSCILLATIONS ACCRETION DISK BLACK-HOLE SPIN COSMIC CENSORSHIP NONZERO COSMOLOGICAL CONSTANT NULL GEODESICS RESONANCE MODEL GRAVITATIONAL COLLAPSE
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[1831C29188C0]
http://linked.open...i/riv/nazevZdroje	CLASSICAL AND QUANTUM GRAVITY
http://linked.open...in/vavai/riv/obor	BE
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Current problems of gravitation, general relativity and relativistic astrophysics Center for Theoretical Astrophysics
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	27
http://linked.open...iv/tvurceVysledku	Stuchlík, Zdeněk Schee, Jan
http://linked.open...n/vavai/riv/zamer	Relativistic and particle physics and its astrophysical application
issn	0264-9381
number of pages	39 (xsd:int)
http://localhost/t...ganizacniJednotka	19240

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