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Cosmic Crystallography

R. Lehoucq·M. Lachieze-Rey·J. P. Luminet
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Abstract

We assume that the Universe has a non trivial topology whose compact spatial sections have a volume significantly smaller than the horizon volume. By a topological lens effect, such a "folded" space configuration generates multiple images of cosmic sources, e.g. clusters of galaxies. We present a simple and powerful method to unveil non ambiguous observational effects, independently of the sign of the curvature and of the topological type.

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R. Lehoucq, M. Lachieze-Rey, J. P. Luminet. 1996-04-26. Cosmic Crystallography. https://arxiv.org/abs/gr-qc/9604050

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