Newtonian Cosmological Perturbations

Details Newtonian Cosmological Perturbations Newtonian Cosmological Perturbations

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pkas....7..107h&link_type=abstract

Publications of the Korean Astronomical Society, vol.7, no.1, p.107-148

Mathematics

Logic

4

Scientific paper

This paper presents a cosmological perturbation analysis in a Newtonian framework, using the Newtonian multicomponent version of the relativistic covariant equations. This work considers the fully nonlinear evolution of the perturbations, and is generalized to multicomponent systems and imperfect fluids. Known nonlinear solutions are presented in a general framework. Quasi-nonlinear analysis, considering both the compressible and rotational modes, is presented, including cases already known in the literature. The Fourier space representation of the conservation equations is also derived in a general context, with various decompositions of the velocity field. Commonly accepted cosmological frameworks are critically examined in the context of nonlinear evolution. This work may be regarded as the Newtonian counterpart of a recently presented general relativistic covariant formulation.

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