A flat Universe from high-resolution maps of the cosmic microwave background radiation
The blackbody radiation left over from the Big Bang has been transformed by the expansion of the Universe into the nearly isotropic 2.73 K cosmic microwave background. Tiny inhomogeneities in the early Universe left their imprint on the microwave background in the form of small anisotropies in its t...
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ftcaltechauth:oai:authors.library.caltech.edu:4pvyr-dpz91 2024-10-13T14:01:53+00:00 A flat Universe from high-resolution maps of the cosmic microwave background radiation de Bernardis, P. Crill, B. P. Ganga, K. Hivon, E. Hristov, V. V. Lange, A. E. Mason, P. V. 2000-04-27 https://doi.org/10.1038/35010035 unknown Nature Publishing Group https://doi.org/10.1038/35010035 eprintid:56211 info:eu-repo/semantics/closedAccess Other Nature, 404(6781), 955, (2000-04-27) info:eu-repo/semantics/article 2000 ftcaltechauth https://doi.org/10.1038/35010035 2024-09-25T18:46:36Z The blackbody radiation left over from the Big Bang has been transformed by the expansion of the Universe into the nearly isotropic 2.73 K cosmic microwave background. Tiny inhomogeneities in the early Universe left their imprint on the microwave background in the form of small anisotropies in its temperature. These anisotropies contain information about basic cosmological parameters, particularly the total energy density and curvature of the Universe. Here we report the first images of resolved structure in the microwave background anisotropies over a significant part of the sky. Maps at four frequencies clearly distinguish the microwave background from foreground emission. We compute the angular power spectrum of the microwave background, and find a peak at Legendre multipole l_(peak) = (197 ± 6), with an amplitude ΔT_(200) = (69 ± 8) µK. This is consistent with that expected for cold dark matter models in a flat (euclidean) Universe, as favoured by standard inflationary models. © 2000 Macmillan Magazines Ltd. Received 24 March 2000; Accepted 3 April 2000. The Boomerang experiment was supported by Programma Nazionale di Ricerche in Antartide, Universita' di Roma "La Sapienza", and Agenzia Spaziale Italiana in Italy, by the NSF and NASA in the USA, and by PPARC in the UK. We thank the staff of the National Scientific Ballooning Facility, and the United States Antarctic Program personnel in McMurdo for their preflight support and an effective LDB flight. DOE/NERSC provided the supercomputing facilities. Article in Journal/Newspaper Antarc* Antarctic Antartide United States Antarctic Program Caltech Authors (California Institute of Technology) Antarctic Nature 404 6781 955 959 |
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The blackbody radiation left over from the Big Bang has been transformed by the expansion of the Universe into the nearly isotropic 2.73 K cosmic microwave background. Tiny inhomogeneities in the early Universe left their imprint on the microwave background in the form of small anisotropies in its temperature. These anisotropies contain information about basic cosmological parameters, particularly the total energy density and curvature of the Universe. Here we report the first images of resolved structure in the microwave background anisotropies over a significant part of the sky. Maps at four frequencies clearly distinguish the microwave background from foreground emission. We compute the angular power spectrum of the microwave background, and find a peak at Legendre multipole l_(peak) = (197 ± 6), with an amplitude ΔT_(200) = (69 ± 8) µK. This is consistent with that expected for cold dark matter models in a flat (euclidean) Universe, as favoured by standard inflationary models. © 2000 Macmillan Magazines Ltd. Received 24 March 2000; Accepted 3 April 2000. The Boomerang experiment was supported by Programma Nazionale di Ricerche in Antartide, Universita' di Roma "La Sapienza", and Agenzia Spaziale Italiana in Italy, by the NSF and NASA in the USA, and by PPARC in the UK. We thank the staff of the National Scientific Ballooning Facility, and the United States Antarctic Program personnel in McMurdo for their preflight support and an effective LDB flight. DOE/NERSC provided the supercomputing facilities. |
format |
Article in Journal/Newspaper |
author |
de Bernardis, P. Crill, B. P. Ganga, K. Hivon, E. Hristov, V. V. Lange, A. E. Mason, P. V. |
spellingShingle |
de Bernardis, P. Crill, B. P. Ganga, K. Hivon, E. Hristov, V. V. Lange, A. E. Mason, P. V. A flat Universe from high-resolution maps of the cosmic microwave background radiation |
author_facet |
de Bernardis, P. Crill, B. P. Ganga, K. Hivon, E. Hristov, V. V. Lange, A. E. Mason, P. V. |
author_sort |
de Bernardis, P. |
title |
A flat Universe from high-resolution maps of the cosmic microwave background radiation |
title_short |
A flat Universe from high-resolution maps of the cosmic microwave background radiation |
title_full |
A flat Universe from high-resolution maps of the cosmic microwave background radiation |
title_fullStr |
A flat Universe from high-resolution maps of the cosmic microwave background radiation |
title_full_unstemmed |
A flat Universe from high-resolution maps of the cosmic microwave background radiation |
title_sort |
flat universe from high-resolution maps of the cosmic microwave background radiation |
publisher |
Nature Publishing Group |
publishDate |
2000 |
url |
https://doi.org/10.1038/35010035 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antartide United States Antarctic Program |
genre_facet |
Antarc* Antarctic Antartide United States Antarctic Program |
op_source |
Nature, 404(6781), 955, (2000-04-27) |
op_relation |
https://doi.org/10.1038/35010035 eprintid:56211 |
op_rights |
info:eu-repo/semantics/closedAccess Other |
op_doi |
https://doi.org/10.1038/35010035 |
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Nature |
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404 |
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6781 |
container_start_page |
955 |
op_container_end_page |
959 |
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1812813476151689216 |