Ralf Aurich 2008 Class. Quantum Grav. 25 225017 doi:10.1088/0264-9381/25/22/225017
Ralf Aurich
Show affiliationsThe spatial cross-correlation function ξC 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 ΛCDM simulations which point to a high false positive rate of the spatial-correlation-function method such that a firm conclusion cannot be drawn.
98.70.Vc Background radiations
95.35.+d Dark matter (stellar, interstellar, galactic, and cosmological)
Issue 22 (21 November 2008)
Received 11 June 2008, in final form 31 July 2008
Published 3 November 2008
Ralf Aurich 2008 Class. Quantum Grav. 25 225017