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The jeans instability criterion for a compressible fluid including viscosity and heat conduction

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Abstract

For the region after the recombination era of the Universe the hydrodynamical density waves are analyzed including shear viscosity and heat conduction for ρ=ρc as well as for ρ<ρc(ρc is the critical density of the Universe). Very near to the end of the recombination era (z=1200) we find the well-known Jeans instability. It is shown that the influence of the shear viscosity on the instabilities in negligible, however, a visible influence of the bulk viscosity is present.

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Authors and Affiliations

  1. Optica y Electrónica, Instituto Nacional de Astrofísica, Puebla, México

    M. G. Corona-Galindo

  2. Universität Konstanz Fakultät für Physik, Konstanz, F.R.G.

    H. Dehnen

Authors
  1. M. G. Corona-Galindo
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  2. H. Dehnen
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Corona-Galindo, M.G., Dehnen, H. The jeans instability criterion for a compressible fluid including viscosity and heat conduction. Astrophys Space Sci 153, 87–94 (1989). https://doi.org/10.1007/BF00643614

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  • DOI: https://doi.org/10.1007/BF00643614

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