Jeans collapse of turbulent gas clouds - Tentative theory

Details Jeans collapse of turbulent gas clouds - Tentative theory Jeans collapse of turbulent gas clouds - Tentative theory

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jfm...245....1b&link_type=abstract

Journal of Fluid Mechanics (ISSN 0022-1120), vol. 245, p. 1-28.

Computer Science

39

Gravitational Collapse, Interstellar Gas, Isotropic Turbulence, Molecular Clouds, Gravitational Constant, Jeans Theory, Kinetic Energy, Turbulent Flow

Scientific paper

The conditions for gravitational instability in a statistically homogeneous turbulent fluid is investigated using a renormalization technique, with particular reference to the problem of stability of molecular clouds and the origin of protostellar density fluctuations. It is shown how turbulence at scales smaller than the potentially collapsing scale builds up a turbulent pressure force that effectively resists compression if the kinetic energy is sufficient to balance gravitational attraction.

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