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arXiv · 1310.2184

Role of Viscosity and Cooling in Hydrodynamic Simulation of Two Component Accretion Flow (TCAF) around Black Holes

Kinsuk Giri·Sandip K. Chakrabarti
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Abstract

We carry out numerical simulation of accretion flows around a black hole in presence of both viscous and cooling effects. Instead of using a constant $α$ parameter throughout the simulation grid, we assume that $α$ is maximum on the equatorial plane and gradually goes down in the perpendicular direction We show that when the injected sub-Keplerian flow angular momentum is high enough and/or the viscosity and also cooling is high enough, Two Component {\bf Accretion} Flow (TCAF) would be formed, otherwise the sub-Keplerian flow would remain sub-Keplerian. We see that a Keplerian disk is produced on the equatorial plane. Time variations of the total, Keplerian and Sub-Keplerian matter are studied with respect to various flow parameters.

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Kinsuk Giri, Sandip K. Chakrabarti. 2013-10-08. Role of Viscosity and Cooling in Hydrodynamic Simulation of Two Component Accretion Flow (TCAF) around Black Holes. https://arxiv.org/abs/1310.2184

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