J 2018

Tori sequences as remnants of multiple accreting periods of Kerr SMBHs

PUGLIESE, Daniela a Zdeněk STUCHLÍK

Základní údaje

Originální název

Tori sequences as remnants of multiple accreting periods of Kerr SMBHs

Autoři

PUGLIESE, Daniela (380 Itálie, garant, domácí) a Zdeněk STUCHLÍK (203 Česká republika, domácí)

Vydání

Journal of High Energy Astrophysics, 2018, 2214-4048

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Kód RIV

RIV/47813059:19240/18:A0000274

Organizační jednotka

Filozoficko-přírodovědecká fakulta v Opavě

DOI

http://dx.doi.org/10.1016/j.jheap.2017.11.001

UT WoS

000425895700001

Klíčová slova anglicky

accretion disks; accretion; jets; black hole physics; hydrodynamics

Příznaky

Mezinárodní význam, Recenzováno

Návaznosti

GB14-37086G, projekt VaV. GJ16-03564Y, projekt VaV.
Změněno: 4. 4. 2019 12:50, RNDr. Jan Hladík, Ph.D.

Anotace

V originále

Super-massive black holes (SMBHs) hosted in active galactic nuclei (AGNs) can be characterized by multi-accreting periods as the attractors interact with the environment during their life-time. These multi-accretion episodes should leave traces in the matter orbiting the attractor. Counterrotating and even misaligned structures orbiting around the SMBHs would be consequences of these episodes. Our task in this work is to consider situations where such accretions occur and to trace their remnants represented by several toroidal accreting fluids, corotating or counterrotating relative to the central Kerr attractor, and created in various regimes during the evolution of matter configurations around SMBHs. We focus particularly on the emergence of matter instabilities, i.e., tori collisions, accretion onto the central Kerr black hole, or creation of jet-like structures (proto-jets). Each orbiting configuration is governed by the general relativistic hydrodynamic Boyer condition of equilibrium configurations of rotating perfect fluid. We prove that sequences of configurations and hot points, where an instability occurs, characterize the Kerr SMBHs, depending mainly on their spin-mass ratios. The occurrence of tori accretion or collision are strongly constrained by the fluid rotation with respect to the central black hole and the relative rotation with respect to each other. Our investigation provides characteristic of attractors where traces of multi-accreting episodes can be found and observed.
Zobrazeno: 26. 11. 2024 22:03