About: Dynamics of current-carrying string loops in the Kerr naked-singularity and black-hole spacetimes

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About: Dynamics of current-carrying string loops in the Kerr naked-singularity and black-hole spacetimes Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://journals.aps.org/prd/abstract/10.1103/PhysRevD.88.065004
Description	Current-carrying string-loop dynamics is studied in the Kerr spacetimes. With attention concentrated to the axisymmetric motion of string loops around the symmetry axis of both black-hole (BH) and naked singularity (NS) spacetimes, it is shown that the resulting motion is governed by the presence of an outer tension barrier and an inner angular momentum barrier that are influenced by the BH or NS spin. We classify the string dynamics according to properties of the energy boundary function (effective potential) for the string loop motion. We have found that for NS there exist new types of energy boundary function, namely those with off-equatorial minima. Conversion of the energy of the string oscillations to the energy of the linear translational motion has been studied. Such a transmutation effect is much more efficient in the NS spacetimes because of lack of the event horizon. For BH spacetimes efficiency of the transmutation effect is only weakly spin dependent. Transition from the regular to chaotic regime of the string-loop dynamics is examined and used for explanation of the string-loop motion focusing problem. Radial and vertical frequencies of small oscillations of string loops near minima of the effective potential in the equatorial plane are given. These can be related to high-frequency quasiperiodic oscillations observed near black holes. Current-carrying string-loop dynamics is studied in the Kerr spacetimes. With attention concentrated to the axisymmetric motion of string loops around the symmetry axis of both black-hole (BH) and naked singularity (NS) spacetimes, it is shown that the resulting motion is governed by the presence of an outer tension barrier and an inner angular momentum barrier that are influenced by the BH or NS spin. We classify the string dynamics according to properties of the energy boundary function (effective potential) for the string loop motion. We have found that for NS there exist new types of energy boundary function, namely those with off-equatorial minima. Conversion of the energy of the string oscillations to the energy of the linear translational motion has been studied. Such a transmutation effect is much more efficient in the NS spacetimes because of lack of the event horizon. For BH spacetimes efficiency of the transmutation effect is only weakly spin dependent. Transition from the regular to chaotic regime of the string-loop dynamics is examined and used for explanation of the string-loop motion focusing problem. Radial and vertical frequencies of small oscillations of string loops near minima of the effective potential in the equatorial plane are given. These can be related to high-frequency quasiperiodic oscillations observed near black holes. (en)
Title	Dynamics of current-carrying string loops in the Kerr naked-singularity and black-hole spacetimes Dynamics of current-carrying string loops in the Kerr naked-singularity and black-hole spacetimes (en)
skos:prefLabel	Dynamics of current-carrying string loops in the Kerr naked-singularity and black-hole spacetimes Dynamics of current-carrying string loops in the Kerr naked-singularity and black-hole spacetimes (en)
skos:notation	RIV/47813059:19240/13:#0004619!RIV14-GA0-19240___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GA202/09/0772), S
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Stuchlík, Zdeněk Kološ, Martin
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	70959
http://linked.open...ai/riv/idVysledku	RIV/47813059:19240/13:#0004619
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	QUASI-PERIODIC OSCILLATIONS; X-RAY BINARIES; FLUX TUBES (en)
http://linked.open.../riv/klicoveSlovo	QUASI-PERIODIC OSCILLATIONS FLUX TUBES X-RAY BINARIES
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[CF8AB29BF6D4]
http://linked.open...i/riv/nazevZdroje	PHYSICAL REVIEW D
http://linked.open...in/vavai/riv/obor	BN
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
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	88
http://linked.open...iv/tvurceVysledku	Stuchlík, Zdeněk Kološ, Martin
http://linked.open...ain/vavai/riv/wos	000323894000020
issn	1550-7998
number of pages	25 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevD.88.065004
http://localhost/t...ganizacniJednotka	19240

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