Dependence of General Relativistic Accretion on Black Hole Spin

Details Dependence of General Relativistic Accretion on Black Hole Spin Dependence of General Relativistic Accretion on Black Hole Spin

2004-08-10

arxiv.org/abs/astro-ph/0408170v1

Astrophys.J. 613 (2004) L49-L52; Erratum-ibid. 640 (2006) L107-108

Astronomy and Astrophysics

Astrophysics

Accepted for ApJ Letters. 4 pages, 2 figs; this version includes 1 eqn and 1 refs omitted from the published version for space

Scientific paper

10.1086/424875

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.

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