RINGED ACCRETION DISKS: INSTABILITIES

Journal Article · Fri Apr 01 00:00:00 EDT 2016 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.3847/0067-0049/223/2/27· OSTI ID:22661083

Pugliese, D.

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.

• OSTI ID: 22661083
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 223, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ACCRETION DISKS
ATTRACTORS
BLACK HOLES
CONFIGURATION
EQUILIBRIUM
HYDRODYNAMICS
IDEAL FLOW
INSTABILITY
KERR FIELD
KERR METRIC
RELATIVISTIC RANGE
SPIN