Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2004-05-07
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
LaTeX, 3 pages, submitted to Proceedings of the MGX
Scientific paper
We study generalisations of the Einstein--Straus model in cylindrically symmetric settings by considering the matching of a static space-time to a non-static spatially homogeneous space-time, preserving the symmetry. We find that such models possess severe restrictions, such as constancy of one of the metric coefficients in the non-static part. A consequence of this is that it is impossible to embed static locally cylindrically symmetric objects in reasonable spatially homogeneous cosmologies.
Mena Filipe C.
Tavakol Reza
Vera Raül
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