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arxiv: 0803.2130 · v2 · submitted 2008-03-14 · 🌌 astro-ph

A spatial correlation analysis for a toroidal universe

classification 🌌 astro-ph
keywords spatialtoroidaluniverseanalysedanalysisappliedcannotcell
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The spatial cross-correlation function xi_C recently introduced by Roukema et al. is applied to the equilateral toroidal topology of the universe. Several CMB maps based on the WMAP 5yr data are analysed and a small likelihood in favour of a torus cell is revealed. The results are compared to ten LCDM simulations which point to a high false positive rate of the spatial-correlation-function method such that a firm conclusion cannot be drawn.

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