About: Magnetic Neutral Points and Electric Lines of Force in Strong Gravity of a Rotating Black Hole

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Magnetic field can be amplified and twisted near a supermassive black hole residing in a galactic nucleus. At the same time magnetic null points develop near the horizon. We examine a large-scale oblique magnetic field near a rotating (Kerr) black hole as an origin of magnetic layers, where the field direction changes abruptly in the ergosphere region. In consequence of this, magnetic null points can develop by purely geometrical effects of the strong gravitational field and the frame-dragging mechanism. We identify magnetic nulls as possible sites of magnetic reconnection and suggest that particles may be accelerated efficiently by the electric component. The situation we discuss is relevant for starving nuclei of some galaxies which exhibit episodic accretion events, namely, Sagittarius A* black hole in our Galaxy. Magnetic field can be amplified and twisted near a supermassive black hole residing in a galactic nucleus. At the same time magnetic null points develop near the horizon. We examine a large-scale oblique magnetic field near a rotating (Kerr) black hole as an origin of magnetic layers, where the field direction changes abruptly in the ergosphere region. In consequence of this, magnetic null points can develop by purely geometrical effects of the strong gravitational field and the frame-dragging mechanism. We identify magnetic nulls as possible sites of magnetic reconnection and suggest that particles may be accelerated efficiently by the electric component. The situation we discuss is relevant for starving nuclei of some galaxies which exhibit episodic accretion events, namely, Sagittarius A* black hole in our Galaxy. (en)
Title	Magnetic Neutral Points and Electric Lines of Force in Strong Gravity of a Rotating Black Hole Magnetic Neutral Points and Electric Lines of Force in Strong Gravity of a Rotating Black Hole (en)
skos:prefLabel	Magnetic Neutral Points and Electric Lines of Force in Strong Gravity of a Rotating Black Hole Magnetic Neutral Points and Electric Lines of Force in Strong Gravity of a Rotating Black Hole (en)
skos:notation	RIV/67985815:_____/13:00394199!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(GC13-00070J)
http://linked.open...iv/cisloPeriodika	3A
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Karas, Vladimír Kunneriath, Devaky Kopáček, Ondřej
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	85718
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/13:00394199
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	galaxies; nuclei; black hole physics (en)
http://linked.open.../riv/klicoveSlovo	galaxies nuclei black hole physics
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[CD75FBB6D021]
http://linked.open...i/riv/nazevZdroje	International Journal of Astronomy and Astrophysics
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Accretion process in strong gravity of Galactic Center
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	3
http://linked.open...iv/tvurceVysledku	Karas, Vladimír Kunneriath, Devaky Kopáček, Ondřej
issn	2161-4717
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.4236/ijaa.2013.33A003

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