About: Fragmentation of electric currents in the solar corona by plasma flows

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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 consider a magnetic configuration consisting of an arcade structure and a detached plasmoid, resulting from a magnetic reconnection process, as is typically found in connection with solar flares. We study spontaneous current fragmentation caused by shear and vortex plasma flows. We find that current fragmentation takes place at different locations within our configuration. Steep gradients of the Alfven Mach number are required, implying the strong influence of shear flows on current amplification and filamentation of the magnetohydrostatic current sheets. Crescent-or ring-like structures appear along the outer separatrix, butterfly structures between the upper and lower plasmoids, and strong current peaks close the lower boundary (photosphere). Furthermore, impressing an intrinsic small-scale structure on the upper plasmoid results in strong fragmentation of the plasmoid. Hence fragmentation of current sheets and plasmoids is an inherent property of magnetohydrodynamic theory. We consider a magnetic configuration consisting of an arcade structure and a detached plasmoid, resulting from a magnetic reconnection process, as is typically found in connection with solar flares. We study spontaneous current fragmentation caused by shear and vortex plasma flows. We find that current fragmentation takes place at different locations within our configuration. Steep gradients of the Alfven Mach number are required, implying the strong influence of shear flows on current amplification and filamentation of the magnetohydrostatic current sheets. Crescent-or ring-like structures appear along the outer separatrix, butterfly structures between the upper and lower plasmoids, and strong current peaks close the lower boundary (photosphere). Furthermore, impressing an intrinsic small-scale structure on the upper plasmoid results in strong fragmentation of the plasmoid. Hence fragmentation of current sheets and plasmoids is an inherent property of magnetohydrodynamic theory. (en)
Title	Fragmentation of electric currents in the solar corona by plasma flows Fragmentation of electric currents in the solar corona by plasma flows (en)
skos:prefLabel	Fragmentation of electric currents in the solar corona by plasma flows Fragmentation of electric currents in the solar corona by plasma flows (en)
skos:notation	RIV/67985815:_____/13:00399164!RIV14-GA0-67985815
http://linked.open...avai/predkladatel	Astronomický ústav AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-24782S), P(GAP209/12/0103)
http://linked.open...iv/cisloPeriodika	August
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Karlický, Marian Kraus, Michaela Nickeler, Dieter Horst
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	Astronomický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	75653
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/13:00399164
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	magnetohydrodynamics; Sun flares; Sun corona (en)
http://linked.open.../riv/klicoveSlovo	Sun corona magnetohydrodynamics Sun flares
http://linked.open...odStatuVydavatele	FR - Francouzská republika
http://linked.open...ontrolniKodProRIV	[AB68FFE3F4EC]
http://linked.open...i/riv/nazevZdroje	Astronomy & Astrophysics
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Radio and X-ray diagnostics of primary-energy-release processes in solar flares and their numerical simulations Turbulent energy transport in magnetic reconnection: Advanced numerical modeling and application to solar flares and eruptions
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	556
http://linked.open...iv/tvurceVysledku	Karlický, Marian Kraus, Michaela Nickeler, Dieter Horst Wiegelmann, T.
http://linked.open...ain/vavai/riv/wos	000323893500061
issn	0004-6361
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1051/0004-6361/201321847

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