Spherical Accretion

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Spherical Accretion

ljk — 3/15/2006 4:35:35 PM (archived)

Astrophysics, abstract
astro-ph/0603293

From: Re'em Sari [view email]

Date: Sun, 12 Mar 2006 22:52:49 GMT (6kb)

Spherical Accretion

Authors: Re'em Sari, Peter Goldreich

Comments: ApJ Letters, 3 pages

We compare different examples of spherical accretion onto a gravitating mass. Limiting cases include the accretion of a collisionally dominated fluid and the accretion of collisionless particles. We derive expressions for the accretion rate and density profile for semi-collisional accretion which bridges the gap between these limiting cases. Particle crossing of the Hill sphere during the formation of the outer planets is likely to have taken place in the semi-collisional regime.

http://arxiv.org/abs/astro-ph/0603293

The whole thread (8 posts)

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    - Spherical Accretion - ljk - 3/15/2006 4:35:35 PM
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