The large-scale structure of the universe in the frame of the model equation of non-linear diffusion

Details The large-scale structure of the universe in the frame of the model equation of non-linear diffusion The large-scale structure of the universe in the frame of the model equation of non-linear diffusion

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.236..385g&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 236, Jan. 15, 1989, p. 385-402.

Astronomy and Astrophysics

Astronomy

202

Astronomical Models, Cosmology, Diffusion, Evolution (Development), Universe, Asymptotic Methods, Density Distribution, Gravitational Effects, Velocity Distribution

Scientific paper

The evolution of density inhomogeneities and the velocity field in an expanding continuous medium has been explored using the model equation of nonlinear diffusion together with an equation of continuity incorporating mass density. The method provides an approximate description of density inhomogeneity growth at the advanced nonlinear stage of gravitational instability. The statistical characteristics of an ensemble of density clumps, such as their masses, velocities, and spatial distribution, can be determined.

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