How Anisotropic is our Universe?
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 mode...
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| Format: | Journal article |
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1996
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| _version_ | 1797095004454256640 |
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| author | Bunn, E Ferreira, P Silk, J |
| author_facet | Bunn, E Ferreira, P Silk, J |
| author_sort | Bunn, E |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-07T04:21:49Z |
| format | Journal article |
| id | oxford-uuid:cb43f837-d9f9-4ef8-9cd3-2af7bd83491d |
| institution | University of Oxford |
| last_indexed | 2024-03-07T04:21:49Z |
| publishDate | 1996 |
| record_format | dspace |
| spelling | oxford-uuid:cb43f837-d9f9-4ef8-9cd3-2af7bd83491d2022-03-27T07:13:39ZHow Anisotropic is our Universe?Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:cb43f837-d9f9-4ef8-9cd3-2af7bd83491dSymplectic Elements at Oxford1996Bunn, EFerreira, PSilk, JLarge-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. |
| spellingShingle | Bunn, E Ferreira, P Silk, J How Anisotropic is our Universe? |
| title | How Anisotropic is our Universe? |
| title_full | How Anisotropic is our Universe? |
| title_fullStr | How Anisotropic is our Universe? |
| title_full_unstemmed | How Anisotropic is our Universe? |
| title_short | How Anisotropic is our Universe? |
| title_sort | how anisotropic is our universe |
| work_keys_str_mv | AT bunne howanisotropicisouruniverse AT ferreirap howanisotropicisouruniverse AT silkj howanisotropicisouruniverse |