Constraining the Topology of the Universe

Details Constraining the Topology of the Universe Constraining the Topology of the Universe

2003-10-08

arxiv.org/abs/astro-ph/0310233v1

Phys.Rev.Lett. 92 (2004) 201302

Astronomy and Astrophysics

Astrophysics

Submitted to PRL

Scientific paper

10.1103/PhysRevLett.92.201302

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 degrees. For a wide class of models, the non-detection rules out the possibility that we live in a universe with topology scale smaller than 24 Gpc.

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