A spatial correlation analysis for a toroidal universe

被引：22

作者：

Aurich, Ralf ^{[1
]}

机构：

[1] Univ Ulm, Inst Theoret Phys, D-89069 Ulm, Germany

来源：

CLASSICAL AND QUANTUM GRAVITY | 2008年 / 25卷 / 22期

关键词：

D O I：

10.1088/0264-9381/25/22/225017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The spatial cross-correlation function xi(C) recently introduced by Roukema et al (2008 Astron. Astrophys. 486 55 (arXiv:0801.0006 [astro-ph])) 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 Lambda CDM 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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页数：12

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