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

    Zdeněk Stuchlík · Duben 01, 2019 · Fyzika · 0 comments
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    Publication date: Apr 2019

    Abstract:
    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.

    Authors:
    Pugliese, D.; Stuchlík, Z.;

    https://ui.adsabs.harvard.edu/abs/2019EPJC…79..288P

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