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Title:		Hydrodynamics of the universe
Authors:		ZELDOVICH, IA. B.
Journal:		(Symposium on Advanced Problems and Methods in Fluid Mechanics, 12th, Bialowieza, Poland, Sept. 8-13, 1975.) Fluid Dynamics Transactions, vol. 8, 1976, p. 279-287.
Publication Date:		00/1976
Category:		Astrophysics
Origin:		STI
NASA/STI Keywords:		COSMOLOGY, GALACTIC EVOLUTION, GRAVITATIONAL EFFECTS, HYDRODYNAMICS, UNIVERSE, ASTRONOMICAL MODELS, EXPANSION, FLUID FLOW, NEWTON THEORY, NONLINEAR EQUATIONS, PERTURBATION THEORY
Bibliographic Code:		1976sapm....8..279Z

Abstract

A classical approach (i.e., the Friedmann theory of Hubble expansion) is taken to the overall expansion of the universe and to galaxy formation. A classical homogeneous and isotropic solution is found for fluid motion subject to gravitational interaction, and approximate nonlinear perturbation theory is developed for galactic-cluster perturbations. It is stressed that hydrodynamic and Newtonian gravitation theories are fully applicable to explaining the expansion of the universe and the formation of galaxies.

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