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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F13%3A00394199" target="_blank" >RIV/67985815:_____/13:00394199 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4236/ijaa.2013.33A003" target="_blank" >http://dx.doi.org/10.4236/ijaa.2013.33A003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4236/ijaa.2013.33A003" target="_blank" >10.4236/ijaa.2013.33A003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 episodicaccretion events, namely, Sagittarius A* black hole in our Galaxy.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 episodicaccretion events, namely, Sagittarius A* black hole in our Galaxy.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GC13-00070J" target="_blank" >GC13-00070J: Proces akrece v silné gravitaci jádra Galaxie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Astronomy and Astrophysics

ISSN

2161-4717

e-ISSN

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Svazek periodika

3

Číslo periodika v rámci svazku

3A

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

18-24

Kód UT WoS článku

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EID výsledku v databázi Scopus

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