EAS Publications Series
Volume 30, 2008Spanish Relativity Meeting - Encuentros Relativistas Españoles , ERE2007: Relativistic Astrophysics and Cosmology
|Page(s)||237 - 240|
|Published online||30 September 2008|
A. Oscoz, E. Mediavilla and M. Serra-Ricart (eds)
EAS Publications Series, 30 (2008) 237-240
Algebraically general and gravito-electric rotating dust
Faculty of Applied Sciences TW16, Gent University, Galglaan 2, 9000 Gent, Belgium
An invariant classification scheme of algebraically general rotating dust with a purely electric Weyl tensor is presented. It turns out that the vorticity vector of the dust congruence is necessarily parallel to a Weyl principal vector, which is moreover geodesic. An explicit metric expression can be obtained for the subclass of expanding models with one functionally independent zero-order Riemann invariant. The basic equations for the general case, where there are two such invariants, are given within a weighted 1+1+2 tetrad formalism.
© EAS, EDP Sciences, 2008
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