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Title:
Constraining the Topology of the Universe
Authors:
Cornish, Neil J.; Spergel, David N.; Starkman, Glenn D.; Komatsu, Eiichiro
Affiliation:
AA(Department of Physics, Montana State University, Bozeman, Montana 59717, USA), AB(Department of Physics, Montana State University, Bozeman, Montana 59717, USA), AC(Department of Physics, Montana State University, Bozeman, Montana 59717, USA), AD(Department of Physics, Montana State University, Bozeman, Montana 59717, USA)
Publication:
Physical Review Letters, vol. 92, Issue 20, id. 201302 (PhRvL Homepage)
Publication Date:
05/2004
Origin:
APS
DOI:
10.1103/PhysRevLett.92.201302
Bibliographic Code:
2004PhRvL..92t1302C

Abstract

The first year data from the Wilkinson Microwave Anisotropy Probe are used to place stringent constraints on the topology of the Universe. We search for pairs of circles on the sky with similar temperature patterns along each circle. We restrict the search to back-to-back circle pairs, and to nearly back-to-back circle pairs, as this covers the majority of the topologies that one might hope to detect in a nearly flat universe. We do not find any matched circles with radius greater than 25°. For a wide class of models, the nondetection rules out the possibility that we live in a universe with topology scale smaller than 24Gpc.
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