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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ftcern:oai:cds.cern.ch:543468 2023-05-15T18:22:25+02:00 Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters Chiba, T Sugiyama, N Suto, Y 1994 http://cds.cern.ch/record/543468 eng eng http://cds.cern.ch/record/543468 astro-ph/9311012 oai:cds.cern.ch:543468 Astrophysics and Astronomy 1994 ftcern 2018-07-28T05:23:15Z 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 $n - \Omega_b$ plane in the case of $\lambda_0=1-\Omega_b$ (flat models) and $\lambda_0=0$ (open models), where $n$ is the primordial spectral index of entropy fluctuations and $\Omega_b$ 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. Other/Unknown Material South pole CERN Document Server (CDS) South Pole |
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CERN Document Server (CDS) |
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English |
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Astrophysics and Astronomy |
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Astrophysics and Astronomy Chiba, T Sugiyama, N Suto, Y Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters |
topic_facet |
Astrophysics and Astronomy |
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 $n - \Omega_b$ plane in the case of $\lambda_0=1-\Omega_b$ (flat models) and $\lambda_0=0$ (open models), where $n$ is the primordial spectral index of entropy fluctuations and $\Omega_b$ 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. |
author |
Chiba, T Sugiyama, N Suto, Y |
author_facet |
Chiba, T Sugiyama, N Suto, Y |
author_sort |
Chiba, T |
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 |
publishDate |
1994 |
url |
http://cds.cern.ch/record/543468 |
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South Pole |
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South Pole |
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South pole |
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South pole |
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http://cds.cern.ch/record/543468 astro-ph/9311012 oai:cds.cern.ch:543468 |
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1766201823341838336 |