Constraining the topology of the Universe

Neil J. Cornish, David N. Spergel, Glenn D. Starkman, Eiichiro Komatsu

Research output: Contribution to journalArticlepeer-review

182 Scopus citations


A method developed for placing the constraints by searching for matched circles in the map on the topology of the universe was discussed. The cosmic microwave background (CMB) fluctuations that came primarily from the last scattering surface (LSS) were the key assumptions in the analysis. It was found that there were no matched circles with radius greater than 25°. It was observed that the space of the local geometry constrained but did not dictated the topology of the space. The Wilkinson microwave anisotropy probe (WMAP) data suggested that the universe was either Euclidean or its radius of curvature was large compared to the radius of the LSS.

Original languageEnglish (US)
Article number201302
Pages (from-to)201302-1-201302-4
JournalPhysical review letters
Issue number20
StatePublished - May 21 2004

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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