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We consider adiabatic accretion onto a black hole in the hydrodynamic approximation with zero viscosity. For a slowly rotating black hole, the desired solution is a perturbation of a spherically symmetric flow. We obtain an analytic solution for such a perturbation, and find the correction to the accretion rate and the shape of the sonic surface. We take a similar approach to the accretion of matter onto a slowly moving black hole. Our fundamental result is that neither black hole rotation nor slow motion alters the essential nature of accretion. As before, this result can be extended to supersonic velocities in a collisionless flow, with the shape of the sonic surface and the accretion rate remaining virtually unchanged.

Item Type:	Refereed Article
Keywords:	rotating black holes, transonic accretion, 2D hydrodynamical model, rotational perturbation of spherically symmetric flow
Research Division:	Physical Sciences
Research Group:	Astronomical and Space Sciences
Research Field:	Astronomical and Space Sciences not elsewhere classified
Objective Division:	Expanding Knowledge
Objective Group:	Expanding Knowledge
Objective Field:	Expanding Knowledge in the Physical Sciences
Author:	Pidopryhora, Y (Dr Yurii Pidopryhora)
ID Code:	95828
Year Published:	1995
Deposited By:	Mathematics and Physics
Deposited On:	2014-10-08
Last Modified:	2015-04-08
Downloads:	0