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    Tori sequences as remnants of multiple accreting periods of Kerr SMBHs

    Zdeněk Stuchlík · Březen 01, 2018 · Fyzika · 0 comments
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    Publication date: Mar 2018

    Abstract:
    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.

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

    https://ui.adsabs.harvard.edu/abs/2018JHEAp..17….1P

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