A Galaxy-like perturbation of the Robertson-Walker metric

Details A Galaxy-like perturbation of the Robertson-Walker metric A Galaxy-like perturbation of the Robertson-Walker metric

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007gregr..39.2001w&link_type=abstract

General Relativity and Gravitation, Volume 39, Issue 12, pp.2001-2015

Physics

2

Scientific paper

The standard procedure for finding analytic perturbations in General Relativity suffers from the drawback that it is cumbersome to use beyond linear order perturbations. We present an alternate method of finding perturbations and provide an example in the form of a spherically symmetric over-dense region in an open Robertson-Walker background. The perturbation has several properties which are similar to those of a spiral galaxy.

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