Nondissipative gravitational turbulence in the expanding Universe

Details Nondissipative gravitational turbulence in the expanding Universe Nondissipative gravitational turbulence in the expanding Universe

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988zhetf..94....5g&link_type=abstract

Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki (ISSN 0044-4510), vol. 94, Oct. 1988, p. 5-15. In Russian.

Astronomy and Astrophysics

Astrophysics

11

Astrophysics, Big Bang Cosmology, Gravitation Theory, Turbulence, Universe, Fluctuation Theory, Gas Density, Hierarchies, Modes, Nonlinearity, Singularity (Mathematics)

Scientific paper

The nonlinear stage of development of a Jeans instability in the expanding Universe is investigated. It is shown that, in a growing gravitational mode, the relation between the density and velocity is such that, during the nonlinear stage, the maximum of the initial density develops into a self-trapped nondissipative gravitational singularity (NGS). The NGS has definite scaling relationships for the gas density, velocity and field potential in the vicinity of the singularity.

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