LogoLogo
  • Bio
  • Fyzika
  • V médiích
  • Fotografie
  • Výstavy
  • Kontakt

    Ringed Accretion Disks: Evolution of Double Toroidal Configurations

    Zdeněk Stuchlík · Duben 01, 2017 · Fyzika · 0 comments
    0

    Publication date: Apr 2017

    Abstract:
    We investigate ringed accretion disks composed of two tori (rings)
    orbiting on the equatorial plane of a central supermassive Kerr black
    hole. We discuss the emergence of the instability phases of each ring of
    the macro-configuration (ringed disk) according to the Paczynski
    violation of mechanical equilibrium. In the full general relativistic
    treatment, we consider the effects of the geometry of the Kerr
    spacetimes relevant to the characterization of the evolution of these
    configurations. The discussion of ring stability in different spacetimes
    enables us to identify particular classes of central Kerr attractors
    depending on their dimensionless spin. As a result of this analysis, we
    set constraints on the evolutionary schemes of the ringed disks relative
    to the torus morphology and on their rotation relative to the central
    black hole and to each other. The dynamics of the unstable phases of
    this system is significant for the high-energy phenomena related to
    accretion onto supermassive black holes in active galactic nuclei and
    the extremely energetic phenomena in quasars, which could be observed in
    their X-ray emission.

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

    https://ui.adsabs.harvard.edu/abs/2017ApJS..229…40P

      Facebook   Pinterest   Twitter   Google+

    Leave a Comment! Zrušit odpověď na komentář

    You must be logged in to post a comment.
    Archivy
    Copyright © 2016 Zdeněk Stuchlík