Ruling out a critical density baryonic universe
It has been suggested by Bartlett and Hall that our universe may have the critical density in baryons by virtue of specific interactions with a `shadow' world. We show that this possibility is severely constrained by primordial nucleosynthesis, stellar evolution and the thermalization of the co...
| Principais autores: | , |
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| Formato: | Journal article |
| Idioma: | English |
| Publicado em: |
1997
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| _version_ | 1826281815382425600 |
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| author | Birkel, M Sarkar, S |
| author_facet | Birkel, M Sarkar, S |
| author_sort | Birkel, M |
| collection | OXFORD |
| description | It has been suggested by Bartlett and Hall that our universe may have the critical density in baryons by virtue of specific interactions with a `shadow' world. We show that this possibility is severely constrained by primordial nucleosynthesis, stellar evolution and the thermalization of the cosmic microwave background. In particular, recent observations of small angular-scale anisotropy in the cosmic microwave background conclusively rule out all such baryon-dominated cosmologies. |
| first_indexed | 2024-03-07T00:34:28Z |
| format | Journal article |
| id | oxford-uuid:80eb7d38-b3f4-4853-a90f-e989fc6be5ce |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:34:28Z |
| publishDate | 1997 |
| record_format | dspace |
| spelling | oxford-uuid:80eb7d38-b3f4-4853-a90f-e989fc6be5ce2022-03-26T21:26:41ZRuling out a critical density baryonic universeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:80eb7d38-b3f4-4853-a90f-e989fc6be5ceEnglishSymplectic Elements at Oxford1997Birkel, MSarkar, SIt has been suggested by Bartlett and Hall that our universe may have the critical density in baryons by virtue of specific interactions with a `shadow' world. We show that this possibility is severely constrained by primordial nucleosynthesis, stellar evolution and the thermalization of the cosmic microwave background. In particular, recent observations of small angular-scale anisotropy in the cosmic microwave background conclusively rule out all such baryon-dominated cosmologies. |
| spellingShingle | Birkel, M Sarkar, S Ruling out a critical density baryonic universe |
| title | Ruling out a critical density baryonic universe |
| title_full | Ruling out a critical density baryonic universe |
| title_fullStr | Ruling out a critical density baryonic universe |
| title_full_unstemmed | Ruling out a critical density baryonic universe |
| title_short | Ruling out a critical density baryonic universe |
| title_sort | ruling out a critical density baryonic universe |
| work_keys_str_mv | AT birkelm rulingoutacriticaldensitybaryonicuniverse AT sarkars rulingoutacriticaldensitybaryonicuniverse |