Flat Spots: topological signatures of an open universe in COBE sky maps

Details Flat Spots: topological signatures of an open universe in COBE sky maps Flat Spots: topological signatures of an open universe in COBE sky maps

1997-02-27

arxiv.org/abs/astro-ph/9702242v1

Phys.Rev.Lett. 79 (1997) 974-977

Astronomy and Astrophysics

Astrophysics

5 pages including figures, uses RevTex

Scientific paper

10.1103/PhysRevLett.79.974

We investigate the behaviour 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 COBE sky maps even when
multiple images of astronomical sources are unobservable.

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