Flat Spots: Topological Signatures of an Open Universe in Cosmic Background Explorer Sky Maps
- 11 August 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 79 (6) , 974-977
- https://doi.org/10.1103/physrevlett.79.974
Abstract
We investigate the behavior of light rays in an open universe with a partly periodic horn topology. The geodesics can be solved exactly and the periodic topology creates characteristic new effects in temperature maps of the microwave background. Large flat regions appear in Cosmic Background Explorer sky maps even when multiple images of astronomical sources are unobservable.Keywords
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