Averaging Hypotheses in Newtonian Cosmology

Authors :: Buchert, T.
Publication Year :: 1995
Publisher :: arXiv, 1995.
Abstract: Average properties of general inhomogeneous cosmological models are discussed in the Newtonian framework. It is shown under which circumstances the average flow reduces to a member of the standard Friedmann--Lema\^\i tre cosmologies. Possible choices of global boundary conditions of inhomogeneous cosmologies as well as consequences for the interpretation of cosmological parameters are put into perspective.<br />Comment: 7 pages, uuencoded gzipped ps-file, 68 kByte Proc. ``Mapping, Measuring and Modelling the Universe'', Valencia 1995, eds.: P. Coles, V. Martinez, M. Pons, to be published by ASP >>>changes of interpretation in Sects. 2.2 and 2.4