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.;