J 2015

Ringed accretion disks: equilibrium configurations

PUGLIESE, Daniela and Zdeněk STUCHLÍK

Basic information

Original name

Ringed accretion disks: equilibrium configurations

Authors

PUGLIESE, Daniela and Zdeněk STUCHLÍK

Edition

The Astrophysical Journal Supplement Series, GB - Spojené království Velké Británie a, 2015, 0067-0049

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

www

Organization unit

Faculty of Philosophy and Science in Opava

DOI

http://dx.doi.org/10.1088/0067-0049/221/2/25

UT WoS

000366620900003

Keywords in English

accretion; black hole physics; hydrodynamics; accretion disks

Tags

UF

Tags

International impact, Reviewed

Links

GB14-37086G, research and development project.
Změněno: 27/1/2021 10:10, Mgr. Pavlína Jalůvková

Abstract

V originále

We investigate a model of a ringed accretion disk, made up by several rings rotating around a supermassive Kerr black hole attractor. Each toroid of the ringed disk is governed by the general relativity hydrodynamic Boyer condition of equilibrium configurations of rotating perfect fluids. Properties of the tori can then be determined by an appropriately defined effective potential reflecting the background Kerr geometry and the centrifugal effects. The ringed disks could be created in various regimes during the evolution of matter configurations around supermassive black holes. Therefore, both corotating and counterrotating rings have to be considered as being a constituent of the ringed disk. We provide constraints on the model parameters for the existence and stability of various ringed configurations and discuss occurrence of accretion onto the Kerr black hole and possible launching of jets from the ringed disk. We demonstrate that various ringed disks can be characterized by a maxi
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