About: Evolution of Kerr superspinars due to accretion counterrotating thin discs

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	String theory predicts the existence of extremely compact objects spinning faster than Kerr black holes. The spacetime exterior to such superspinars is described by Kerr naked singularity geometry breaking the black-hole limit on the internal angular momentum. We demonstrate that the conversion of Kerr superspinars into a near-extreme black hole due to an accretion counterrotating Keplerian disc is much more effective in comparison with the case of a corotating one since both the accreted rest mass necessary for conversion and the evolution time of conversion are by orders smaller for counterrotating discs. The conversion time of Kerr superspinars is given for several accretion regimes, and it is shown that the self-regulated accretion flow implies fastest evolution to the black-hole state. In the final stages of the conversion, Kerr superspinars can serve as very efficient particle accelerators in the region where the black-hole horizon forms. String theory predicts the existence of extremely compact objects spinning faster than Kerr black holes. The spacetime exterior to such superspinars is described by Kerr naked singularity geometry breaking the black-hole limit on the internal angular momentum. We demonstrate that the conversion of Kerr superspinars into a near-extreme black hole due to an accretion counterrotating Keplerian disc is much more effective in comparison with the case of a corotating one since both the accreted rest mass necessary for conversion and the evolution time of conversion are by orders smaller for counterrotating discs. The conversion time of Kerr superspinars is given for several accretion regimes, and it is shown that the self-regulated accretion flow implies fastest evolution to the black-hole state. In the final stages of the conversion, Kerr superspinars can serve as very efficient particle accelerators in the region where the black-hole horizon forms. (en)
Title	Evolution of Kerr superspinars due to accretion counterrotating thin discs Evolution of Kerr superspinars due to accretion counterrotating thin discs (en)
skos:prefLabel	Evolution of Kerr superspinars due to accretion counterrotating thin discs Evolution of Kerr superspinars due to accretion counterrotating thin discs (en)
skos:notation	RIV/47813059:19240/11:#0004066!RIV12-GA0-19240___
http://linked.open...avai/predkladatel	Filozoficko-přírodovědecká fakulta
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	15
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Stuchlík, Zdeněk Truparová, Kamila Hledík, Stanislav
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	198493
http://linked.open...ai/riv/idVysledku	RIV/47813059:19240/11:#0004066
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	SUPERMASSIVE BLACK-HOLES, QUASI-PERIODIC OSCILLATIONS, ORBITAL RESONANCE MODEL, HIGH-FREQUENCY QPOS, NAKED-SINGULARITY, IRON LINE, COSMOLOGICAL CONSTANT, ENERGY EXTRACTION, MOLECULAR GAS, ALPHA LINES (en)
http://linked.open.../riv/klicoveSlovo	ALPHA LINES COSMOLOGICAL CONSTANT ENERGY EXTRACTION HIGH-FREQUENCY QPOS IRON LINE MOLECULAR GAS NAKED-SINGULARITY ORBITAL RESONANCE MODEL QUASI-PERIODIC OSCILLATIONS SUPERMASSIVE BLACK-HOLES
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[277F04FC8658]
http://linked.open...i/riv/nazevZdroje	CLASSICAL AND QUANTUM GRAVITY
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	Current problems of gravitation, general relativity and relativistic astrophysics Center for Theoretical Astrophysics
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	28
http://linked.open...iv/tvurceVysledku	Stuchlík, Zdeněk Hledík, Stanislav Truparová, Kamila
http://linked.open...n/vavai/riv/zamer	Relativistic and particle physics and its astrophysical application
issn	0264-9381
number of pages	23 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/0264-9381/28/15/155017
http://localhost/t...ganizacniJednotka	19240
is http://linked.open...avai/riv/vysledek of	Evolution of Kerr superspinars due to accretion counterrotating thin discs Evolution of Kerr superspinars due to accretion counterrotating thin discs

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