Electrically Charged Matter in Permanent Rotation around Magnetized Black Holes: A Toy Model for Self-gravitating Fluid Tori

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00471635" target="_blank" >RIV/67985815:_____/16:00471635 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/47813059:19240/16:N0000126

Výsledek na webu

<a href="http://dx.doi.org/10.3847/0067-0049/226/1/12" target="_blank" >http://dx.doi.org/10.3847/0067-0049/226/1/12</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/0067-0049/226/1/12" target="_blank" >10.3847/0067-0049/226/1/12</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrically Charged Matter in Permanent Rotation around Magnetized Black Holes: A Toy Model for Self-gravitating Fluid Tori

Popis výsledku v původním jazyce

We present an analytical approach for the equilibrium of a self-gravitating charged fluid embedded in a spherical gravitational and dipolar magnetic fields produced by a central mass. Our scheme is proposed, as a toy model, in the context of gaseous/dusty tori surrounding supermassive black holes in galactic nuclei. While the central black hole dominates the gravitational field and remains electrically neutral, the surrounding material has a non-negligible self-gravitational effect on the torus structure. By charging mechanisms it also acquires non-zero electric charge density, so the two influences need to be taken into account to achieve a self-consistent picture. Using our approach we discuss the impact of self-gravity, represented by the term d(t) (ratio of the torus total mass to the mass of the central body), on the conditions for existence of the equilibrium and the morphology and typology of the tori. By comparison with a previous work without self-gravity, we show that the conditions can be different. Although the main aim of the present paper is to discuss a framework for the classification of electrically charged, magnetized, self-gravitating tori, we also mention potential astrophysical applications to vertically stratified fluid configurations.

Název v anglickém jazyce

Electrically Charged Matter in Permanent Rotation around Magnetized Black Holes: A Toy Model for Self-gravitating Fluid Tori

Popis výsledku anglicky

We present an analytical approach for the equilibrium of a self-gravitating charged fluid embedded in a spherical gravitational and dipolar magnetic fields produced by a central mass. Our scheme is proposed, as a toy model, in the context of gaseous/dusty tori surrounding supermassive black holes in galactic nuclei. While the central black hole dominates the gravitational field and remains electrically neutral, the surrounding material has a non-negligible self-gravitational effect on the torus structure. By charging mechanisms it also acquires non-zero electric charge density, so the two influences need to be taken into account to achieve a self-consistent picture. Using our approach we discuss the impact of self-gravity, represented by the term d(t) (ratio of the torus total mass to the mass of the central body), on the conditions for existence of the equilibrium and the morphology and typology of the tori. By comparison with a previous work without self-gravity, we show that the conditions can be different. Although the main aim of the present paper is to discuss a framework for the classification of electrically charged, magnetized, self-gravitating tori, we also mention potential astrophysical applications to vertically stratified fluid configurations.

Druh

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

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

—

Projekt

<a href="/cs/project/GB14-37086G" target="_blank" >GB14-37086G: Centrum Alberta Einsteina pro gravitaci a astrofyziku</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Astrophysical Journal Supplement Series

ISSN

0067-0049

e-ISSN

—

Svazek periodika

226

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

"12/1"-"12/16"

Kód UT WoS článku

000385400500003

EID výsledku v databázi Scopus

2-s2.0-84989937866