Jeans instability in the linearized Burnett regime

Details Jeans instability in the linearized Burnett regime Jeans instability in the linearized Burnett regime

2004-03-10

arxiv.org/abs/astro-ph/0403249v3

Physica A347 (2005) 375

Astronomy and Astrophysics

Astrophysics

8 pages, no figures. Submitted to Physica A

Scientific paper

10.1016/j.physa.2004.08.022

Jeans instability is derived for the case of a low density self-gravitating gas beyond the Navier-Stokes equations. The Jeans instability criterium is shown to depend on a Burnett coefficient if the formalism is taken up to fourth order in the wave number. It is also shown that previously known viscosity corrections to the Jeans wave-number are enhanced if the full fourth order formalism is applied to the stability analysis.

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