Relativistic thick accretion disks: morphology and evolutionary parameters

Abstract

We explore thick accretion disks around rotating attractors. We detail the configurations analysing the fluid angular momentum and finally providing a characterization of the disk morphology and different possible topologies. Investigating the properties of orbiting disks, a classification of attractors, possibly identifiable in terms of their spin-mass ratio, is introduced; then an attempt to characterize dynamically a series of different disk topologies is discussed, showing that some of the toroidal configuration features are determined by the ratio of the angular momentum of the orbiting matter and the spin mass-ratio of the attractor. Then we focus on "multi-structured" disks, constituted by two o more rings of matter orbiting the same attractor, and we proved that some structures are constrained in the dimension of rings, spacing, location and an upper limit of ring number is provided. Finally, assuming a polytropic equation of state we study some specific cases.

38 pages, 25 figures multipaneles

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• RADs energetics and constraints on emerging tori collisions around super-massive Kerr Black Holes
• Dark matter effect on black hole accretion disks
• Dragged surfaces. On the accretion tori in the ergoregion
• Jet collision with accreting tori around SMBHs. GRHD and light surfaces constraints in aggregates of misaligned tori
• Embedded BHs and multipole globules: Clustered misaligned thick accretion disks around static SMBHs
• The ergoregion in the Kerr spacetime: properties of the equatorial circular motion
• Lense-Thirring effect on accretion flow from counter-rotating tori
• On the accreting tori sequences in Ringed Accretion Disks models. Polytropic equations of state and toroidal magnetic fields