Model Dependence of Transonic Properties of Accretion Flows Around Black Holes

Details Model Dependence of Transonic Properties of Accretion Flows Around Black Holes Model Dependence of Transonic Properties of Accretion Flows Around Black Holes

2004-02-24

arxiv.org/abs/astro-ph/0402553v1

Mon.Not.Roy.Astron.Soc. 327 (2001) 808

Astronomy and Astrophysics

Astrophysics

11 pages 4 figures

Scientific paper

10.1046/j.1365-8711.2001.04758.x

We analytically study how the behaviour of accretion flows changes when the flow model is varied. We study the transonic properties of the conical flow, a flow of constant height and a flow in vertical equilibrium and show that all these models are basically identical provided the polytropic constant is suitably changed from one model to another. We show that this behaviour is extendible even when standing shocks are produced in the flow. The parameter space where shocks are produced remain roughly identical in all these models when the same transformation among the polytropic indices is used. We present applications of these findings.

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