J 2019

RADs energetics and constraints on emerging tori collisions around super-massive Kerr black holes

PUGLIESE, Daniela a Zdeněk STUCHLÍK

Základní údaje

Originální název

RADs energetics and constraints on emerging tori collisions around super-massive Kerr black holes

Autoři

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

Vydání

European Physical Journal C, 2019, 1434-6044

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Kód RIV

RIV/47813059:19240/19:A0000421

Organizační jednotka

Filozoficko-přírodovědecká fakulta v Opavě

DOI

http://dx.doi.org/10.1140/epjc/s10052-019-6786-4

UT WoS

000463381000002

Klíčová slova anglicky

accretion disks; Kerr black hole; stability; X-ray emission

Štítky

, GB14-37086G, GJ16-03564Y, RCTPA, RIVOK

Příznaky

Mezinárodní význam, Recenzováno

Návaznosti

GB14-37086G, projekt VaV. GJ16-03564Y, projekt VaV.
Změněno: 20. 3. 2020 09:47, RNDr. Jan Hladík, Ph.D.

Anotace

V originále

We provide constraints on possible configurations and interactions of two coplanar tori orbiting a central Kerr black hole (BH), in dependence on its dimensionless spin. The two-tori configurations can be directly linked to the current models featuring the obscuration of galactic BH X-ray emission. The emergence of each torus instability phases is discussed and tori collision has been also investigated. The first simple evaluation of the center-of-mass energy proves that collision-energy-efficiency increases with the dimensionless BH spin. We explore the phenomenological aspects of the corotating and counterrotating tori by analyzing properties of the orbiting toroidal configurations related to the fluid enthalpy flux, the mass-flux, the mass-accretion-rates, and the cusp luminosity in the two cases of corotating and counterrotating fluids in dependence on the SMBH spin. The analysis resulted ultimately in a comparative investigation of the properties of corotating versus counterrotating tori, demonstrating that two accretion tori can orbit around the central Kerr attractor only under very specific conditions. Our results also demonstrate that the dynamics of the unstable phases of these double tori systems is significant for the high energy phenomena which could be observable in the X-ray emission and extremely energetic phenomena in active galactic nuclei and quasar.
Zobrazeno: 25. 12. 2024 06:13