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
Vydání
European Physical Journal C, 2019, 1434-6044
Další údaje
Typ výsledku
Článek v odborném periodiku
Utajení
není předmětem státního či obchodního tajemství
Kód RIV
RIV/47813059:19240/19:A0000421
Organizační jednotka
Filozoficko-přírodovědecká fakulta v Opavě
Klíčová slova anglicky
accretion disks; Kerr black hole; stability; X-ray emission
Příznaky
Mezinárodní význam, Recenzováno
Návaznosti
GB14-37086G, projekt VaV. GJ16-03564Y, projekt VaV.
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: 29. 12. 2024 08:57