Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters
We have performed the most comprehensive predictions of the temperature fluctuations \dtt in the primeval isocurvature baryon models to see whether or not the models are consistent with the recent data on the cosmic microwave background anisotropies. More specifically, we computed the \dtt correspon...
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ftdatacite:10.48550/arxiv.astro-ph/9311012 2023-05-15T18:22:31+02:00 Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters Chiba, Takashi Sugiyama, Naoshi Suto, Yasushi 1993 https://dx.doi.org/10.48550/arxiv.astro-ph/9311012 https://arxiv.org/abs/astro-ph/9311012 unknown arXiv https://dx.doi.org/10.1086/174334 Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ Astrophysics astro-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 1993 ftdatacite https://doi.org/10.48550/arxiv.astro-ph/9311012 https://doi.org/10.1086/174334 2022-04-01T17:42:08Z We have performed the most comprehensive predictions of the temperature fluctuations \dtt in the primeval isocurvature baryon models to see whether or not the models are consistent with the recent data on the cosmic microwave background anisotropies. More specifically, we computed the \dtt corresponding to the experimental set-up by the South-Pole and the Owens Valley experiments as well as the COBE satellite. The amplitudes of the predicted \dtt are normalized by means of the COBE 10$^\circ$ data. The resulting constraints on the models are presented on $n - Ω_b$ plane in the case of $λ_0=1-Ω_b$ (flat models) and $λ_0=0$ (open models), where $n$ is the primordial spectral index of entropy fluctuations and $Ω_b$ is the present baryon density parameter. Our results imply that the PIB models cannot be reconciled with the current observations for any reasonable set of cosmological parameters. : 10pages and 4figures compressed uuencoded postscript (with figures), UTAP-93-165 Text South pole DataCite Metadata Store (German National Library of Science and Technology) South Pole |
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Astrophysics astro-ph FOS Physical sciences |
spellingShingle |
Astrophysics astro-ph FOS Physical sciences Chiba, Takashi Sugiyama, Naoshi Suto, Yasushi Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters |
topic_facet |
Astrophysics astro-ph FOS Physical sciences |
description |
We have performed the most comprehensive predictions of the temperature fluctuations \dtt in the primeval isocurvature baryon models to see whether or not the models are consistent with the recent data on the cosmic microwave background anisotropies. More specifically, we computed the \dtt corresponding to the experimental set-up by the South-Pole and the Owens Valley experiments as well as the COBE satellite. The amplitudes of the predicted \dtt are normalized by means of the COBE 10$^\circ$ data. The resulting constraints on the models are presented on $n - Ω_b$ plane in the case of $λ_0=1-Ω_b$ (flat models) and $λ_0=0$ (open models), where $n$ is the primordial spectral index of entropy fluctuations and $Ω_b$ is the present baryon density parameter. Our results imply that the PIB models cannot be reconciled with the current observations for any reasonable set of cosmological parameters. : 10pages and 4figures compressed uuencoded postscript (with figures), UTAP-93-165 |
format |
Text |
author |
Chiba, Takashi Sugiyama, Naoshi Suto, Yasushi |
author_facet |
Chiba, Takashi Sugiyama, Naoshi Suto, Yasushi |
author_sort |
Chiba, Takashi |
title |
Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters |
title_short |
Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters |
title_full |
Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters |
title_fullStr |
Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters |
title_full_unstemmed |
Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters |
title_sort |
microwave background anisotropies in primeval isocurvature baryon models: constraints on the cosmological parameters |
publisher |
arXiv |
publishDate |
1993 |
url |
https://dx.doi.org/10.48550/arxiv.astro-ph/9311012 https://arxiv.org/abs/astro-ph/9311012 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://dx.doi.org/10.1086/174334 |
op_rights |
Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ |
op_doi |
https://doi.org/10.48550/arxiv.astro-ph/9311012 https://doi.org/10.1086/174334 |
_version_ |
1766201921587118080 |