Microwave Anisotropies in the Light of COBE
The recent COBE measurement of anisotropies in the cosmic microwave background and the recent South Pole experiment of Gaier et al. offer an excellent opportunity to probe cosmological theories. We test a class of theories in which the Universe today is flat and matter dominated, and primordial pert...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.255.2021 2023-05-15T18:21:48+02:00 Microwave Anisotropies in the Light of COBE Scott Dodelson Jay M. Jubas The Pennsylvania State University CiteSeerX Archives 1993 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.255.2021 http://arxiv.org/pdf/astro-ph/9301002v1.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.255.2021 http://arxiv.org/pdf/astro-ph/9301002v1.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://arxiv.org/pdf/astro-ph/9301002v1.pdf text 1993 ftciteseerx 2016-01-07T19:54:13Z The recent COBE measurement of anisotropies in the cosmic microwave background and the recent South Pole experiment of Gaier et al. offer an excellent opportunity to probe cosmological theories. We test a class of theories in which the Universe today is flat and matter dominated, and primordial perturbations are adiabatic parameterized by an index n. In this class of theories the predicted signal in the South Pole experiment depends not only on n, but also on the Hubble constant and the baryon density. For n = 1 a large region of this parameter space is ruled out, but there is still a window open which satisfies constraints coming from COBE, measurements of the age of the Universe, the South Pole experiment, and big bang nucleosynthesis. Using the central values of the Hubble constant and baryon density favored by nucleosynthesis and age measurements, we find that, even if the COBE normalization drops by 1σ, n> 1.2 is ruled out. Text South pole Unknown Hubble ENVELOPE(158.317,158.317,-80.867,-80.867) South Pole |
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ftciteseerx |
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English |
description |
The recent COBE measurement of anisotropies in the cosmic microwave background and the recent South Pole experiment of Gaier et al. offer an excellent opportunity to probe cosmological theories. We test a class of theories in which the Universe today is flat and matter dominated, and primordial perturbations are adiabatic parameterized by an index n. In this class of theories the predicted signal in the South Pole experiment depends not only on n, but also on the Hubble constant and the baryon density. For n = 1 a large region of this parameter space is ruled out, but there is still a window open which satisfies constraints coming from COBE, measurements of the age of the Universe, the South Pole experiment, and big bang nucleosynthesis. Using the central values of the Hubble constant and baryon density favored by nucleosynthesis and age measurements, we find that, even if the COBE normalization drops by 1σ, n> 1.2 is ruled out. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Scott Dodelson Jay M. Jubas |
spellingShingle |
Scott Dodelson Jay M. Jubas Microwave Anisotropies in the Light of COBE |
author_facet |
Scott Dodelson Jay M. Jubas |
author_sort |
Scott Dodelson |
title |
Microwave Anisotropies in the Light of COBE |
title_short |
Microwave Anisotropies in the Light of COBE |
title_full |
Microwave Anisotropies in the Light of COBE |
title_fullStr |
Microwave Anisotropies in the Light of COBE |
title_full_unstemmed |
Microwave Anisotropies in the Light of COBE |
title_sort |
microwave anisotropies in the light of cobe |
publishDate |
1993 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.255.2021 http://arxiv.org/pdf/astro-ph/9301002v1.pdf |
long_lat |
ENVELOPE(158.317,158.317,-80.867,-80.867) |
geographic |
Hubble South Pole |
geographic_facet |
Hubble South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
http://arxiv.org/pdf/astro-ph/9301002v1.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.255.2021 http://arxiv.org/pdf/astro-ph/9301002v1.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766201132534726656 |