The Signature of the Negative Curvature of the Universe in CMB Maps

1997/11/07 by V. G. Gurzadyan, Gurzadyan, V. G., S. Torres +2
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #Relativity and Gravitational Theory #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/9711063

Talk given at VIII Marcel Grossmann Meeting (Jerusalem, 1997); to appear in proceedings; Latex 4 pages

arxiv created 1997/11/07 · openalex publication_date 1997/11/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The geodesics followed by cosmic microwave background (CMB) photons show different behaviours depending on the geometry of space. Namely, the effect of `mixing geodesics' predicts a distinct signature in CMB maps: threshold-independent elongated anisotropy spots in negatively curved geometries. We have found statistically significant sign for spot elongation in the COBE four year maps. This can be a direct indication for the negative curvature of the Universe.

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