Name of the Speaker(s): Pariev Vladimir
Institution: Radioastromomy Department of P.N.Lebedev Physical Institute (Russia)
Title of the communication: Hydrodynamic accretion onto rapidly rotating
Kerr black hole
Preliminary abstract (12 lines max.):
Bondi type hydrodynamic accretion of the surrounding matter onto Kerr black
hole with an arbitrary rotational parameter is considered. The black hole is
supposed to be at rest with respect to matter at infinity. The flow is
adiabatic and has no angular momentum. The fact that usually in astrophysics
substance far from the black hole has nonrelativistic temperature introduces
small parameter to the problem and allows to search for the solution as a
perturbation to the accretion of a cold, that is dust--like, matter. The
equations thus obtained are solved analytically. The conditions of the
regularity of the solution at the sonic surface and at infinity allow to
specify unique solution, to find the shape of the sonic surface and to
determine the corrections to Bondi accretion rate.