Nonlinear dynamics of fluctuations in a marginally-stable self-gravitating system

Details Nonlinear dynamics of fluctuations in a marginally-stable self-gravitating system Nonlinear dynamics of fluctuations in a marginally-stable self-gravitating system

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.159...47i&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 159, no. 1, Sept. 1989, p. 47-56.

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Gravitation Theory, Hydrodynamic Equations, Nonlinear Systems, Stellar Motions, Computational Astrophysics, Dynamic Characteristics, Jeans Theory, Langevin Formula

Scientific paper

Some peculiarities in the behavior of a model self-gravitating system described by hydrodynamical equations and the isothermal equation of state connected with the presence of thermodynamical fluctuations in real systems were investigated. The values of density and velocity, respectively, were computed by numerical code perturbed on each time-step and in each computational cell. The procedure is equivalent to an introduction into original hydrodynamical equations of Langevin sources which are random functions.

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