Publication date: Apr 2016
Abstract:
We analyze the possibility that several instability points may be
formed, due to the Paczyński mechanism of violation of mechanical
equilibrium, in the orbiting matter around a supermassive Kerr black
hole. We consider a recently proposed model of a ringed accretion disk,
made up by several tori (rings) that can be corotating or counter-
rotating relative to the Kerr attractor due to the history of the
accretion process. Each torus is governed by the general relativistic
hydrodynamic Boyer condition of equilibrium configurations of rotating
perfect fluids. We prove that the number of the instability points is
generally limited and depends on the dimensionless spin of the rotating
attractor.
Authors:
Pugliese, D.; Stuchlík, Z.;