Cosmic microwave background multipole alignments in slab topologies

Cresswell, J. G., Liddle, A. R., Mukherjee, P. and Riazuelo, A. (2006) Cosmic microwave background multipole alignments in slab topologies. Physical Review D, 73 (4). 0413021-0413026. ISSN 0556-2821

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Several analyses of the microwave sky maps from the Wilkinson Microwave Anisotropy Probe (WMAP) have drawn attention to alignments amongst the low-order multipoles. Amongst the various possible explanations, an effect of cosmic topology has been invoked by several authors. We focus on an alignment of the first four multipoles (ℓ = 2 to 5) found by Land and Magueijo (2005), and investigate the distribution of their alignment statistic for a set of simulated cosmic microwave background maps for cosmologies with slab-like topology. We find that this topology does offer a modest increase in the probability of the observed value, but that even for the smallest topology considered the probability of the observed value remains below one percent.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QB Astronomy
Depositing User: SRO Admin
Date Deposited: 03 Apr 2007
Last Modified: 06 Mar 2017 05:59
Google Scholar:30 Citations

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