Standing Shocks in Magnetized Dissipative Accretion Flow around Black Holes

Abstract

We explore the global structure of the accretion flow around a Schwarzschild black hole where the accretion disc is threaded by toroidal magnetic fields. The accretion flow is optically thin and advection dominated. Synchrotron radiation is considered to be the active cooling mechanism in the flow. With this, we obtain the global transonic accretion solutions and show that centrifugal barrier in the rotating magnetized accretion flow causes a discontinuous transition of the flow variables in the form of shock waves. The shock properties and the dynamics of the post-shock corona are affected by the flow parameters such as viscosity, cooling rate and strength of the magnetic fields. The shock properties are investigated against these flow parameters. We further show that for given set of boundary parameters at the outer edge of the disc, accretion flow around a black hole admits shock when the flow parameters are tuned for a considerable range.

12 pages, 5 figures, Accepted for publication in Journal of Astrophysics and Astronomy. arXiv admin note: text overlap with arXiv:1710.01112

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Cited by in corpus (4)

• Study of general relativistic magnetohydrodynamic accretion flow around black holes
• Resonance crossing of a charged body in a magnetized Kerr background: an analogue of extreme mass ratio inspiral
• Influence of flow thickness on general relativistic low angular momentum accretion around spinning black holes
• Effect of magnetic flux advection on the dynamics of shock in accretion flow around a rotating black hole