Cosmic Crystallography
arXiv:gr-qc/9604050
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.
to appear in Astronomy and Astrophysics. Contains 11 pages, 14 Postscript figures, use A&A LaTeX macros package (l-aa.sty). Copies of figures are available on request
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- The Status of Cosmic Topology after Planck Data
- Cosmic topology. Part I. Limits on orientable Euclidean manifolds from circle searches
- Cosmic topology. Part IIa. Eigenmodes, correlation matrices, and detectability of orientable Euclidean manifolds
- Cosmic topology. Part IVa. Classification of manifolds using machine learning: a case study with small toroidal universes
- Cosmic topology. Part Ic. Limits on lens spaces from circle searches
- Cosmic topology. Part IIIb. Eigenmodes and correlation matrices of spin-2 perturbations in orientable Euclidean manifolds