Nonlinear gravitational clustering in cosmology

Details Nonlinear gravitational clustering in cosmology Nonlinear gravitational clustering in cosmology

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvl..55..437h&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 55, July 22, 1985, p. 437-440.

Mathematics

Logic

8

Astronomical Models, Cosmology, Galactic Clusters, Gravitational Collapse, Computerized Simulation, Coupled Modes, Nonlinear Equations, Particle In Cell Technique, Vlasov Equations

Scientific paper

New numerical results from simulations of cosmological gravitational clustering are displayed. They show a saturation of the nonlinear modes which can be predicted by a quasilinear-type theory. However, such a theory is shown to be inadequate for describing the short-range correlations of galaxies. First nonlinear contributions are computed. Contrary to earlier claims, a nonlinear energy transfer does not shorten the collapse time in the adiabatic scenario.

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