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How Anisotropic is our Universe? | | Emory. F. Bunn
; Pedro Ferreira
; Joseph Silk
; | | Date: |
20 May 1996 | | Journal: | Phys.Rev.Lett. 77 (1996) 2883-2886 | | Abstract: | Large-scale cosmic microwave background anisotropies in homogeneous, globally anisotropic cosmologies are investigated. We perform a statistical analysis in which the four-year data from the Cosmic Background Explorer satellite is searched for the specific anisotropy patterns predicted by these models and thereby set definitive upper limits on the amount of shear, $(sigma/H)_0$ and vorticity, $(omega/H)_0$, which are orders of magnitude stronger than previous constraints. We comment on how these results might impact our understanding of primordial global anisotropy. | | Source: | arXiv, astro-ph/9605123 | | Services: | Forum | Review | PDF | Favorites | |
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