J 2020

Influence of Cosmic Repulsion and Magnetic Fields on Accretion Disks Rotating around Kerr Black Holes

STUCHLÍK, Zdeněk, Martin KOLOŠ, Jiří KOVÁŘ, Petr SLANÝ, Arman TURSUNOV et. al.

Basic information

Original name

Influence of Cosmic Repulsion and Magnetic Fields on Accretion Disks Rotating around Kerr Black Holes

Authors

STUCHLÍK, Zdeněk (203 Czech Republic, belonging to the institution), Martin KOLOŠ (203 Czech Republic, belonging to the institution), Jiří KOVÁŘ (203 Czech Republic, belonging to the institution), Petr SLANÝ (203 Czech Republic, belonging to the institution) and Arman TURSUNOV (860 Uzbekistan, belonging to the institution)

Edition

Universe, 2020, 2218-1997

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

RIV identification code

RIV/47813059:19630/20:A0000036

Organization unit

Institute of physics in Opava

UT WoS

000519107400016

Keywords in English

rotating black hole; accretion disks and tori; vacuum energy an magnetic field; ultra-high energy particles

Tags

International impact, Reviewed

Links

GA19-03950S, research and development project.
Změněno: 23/3/2021 21:50, Mgr. Pavlína Jalůvková

Abstract

V originále

We present a review of the influence of cosmic repulsion and external magnetic fields on accretion disks rotating around rotating black holes and on jets associated with these rotating configurations. We consider both geometrically thin and thick disks. We show that the vacuum energy represented by the relic cosmological constant strongly limits extension of the accretion disks that is for supermassive black holes comparable to extension of largest galaxies, and supports collimation of jets at large distances from the black hole. We further demonstrate that an external magnetic field crucially influences the fate of ionized Keplerian disks causing creation of winds and jets, enabling simultaneously acceleration of ultra-high energy particles with energy up to 1021 eV around supermassive black holes with M similar to 1010M circle dot surrounded by sufficiently strong magnetic field with B similar to 104 G. We also show that the external magnetic fields enable existence of "levitating" off-equatorial clouds or tori, along with the standard equatorial toroidal structures, if these carry a non-vanishing, appropriately distributed electric charge.