We propose a novel approach to the investigation of how black hole spin influences the behavior of astrophysical accretion. We examine the terminal behavior of general relativistic, multi-transonic, hydrodynamic advective accretion in the Kerr metric, by analyzing various dynamical as well as thermodynamic properties of accreting matter extremely close to the event horizon, as a function of Kerr parameter a. The examination of the transonic properties of such flows can be useful in self-consistently discriminating between prograde and retrograde relativistic accretion, and in studying the spectral signatures of black hole rotation.
@article{arxiv.astro-ph/0408170,
title = {Dependence of General Relativistic Accretion on Black Hole Spin},
author = {Paramita Barai and Tapas Kumar Das and Paul J. Wiita},
journal= {arXiv preprint arXiv:astro-ph/0408170},
year = {2009}
}
Comments
Accepted for ApJ Letters. 4 pages, 2 figs; this version includes 1 eqn and 1 refs omitted from the published version for space reasons