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arXiv · 1701.07104

Spherical steady-state accretion of a relativistic collisionless gas into a Schwarzschild black hole

Paola Rioseco·Olivier Sarbach
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Abstract

In previous work, we derived the most general solution of the collisionless Boltzmann equation describing the accretion of a kinetic gas into a Schwarzschild black hole background, and we gave explicit expressions for the corresponding observables (the current density and stress energy-momentum tensor) in terms of certain integrals over the distribution function. In this article, we numerically compute these integrals for the particular case of the steady-state, spherical symmetric accretion flows which, at infinity, are described by an equilibrium distribution function of given temperature. We analyze in detail the behavior of the observables as a function of the temperature and the radial coordinate, comparing our results with the perfect fluid model of Bondi-Michel accretion.

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Paola Rioseco, Olivier Sarbach. 2017-01-24. Spherical steady-state accretion of a relativistic collisionless gas into a Schwarzschild black hole. https://doi.org/10.1088/1742-6596/831/1/012009

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