DASI Three-Year Cosmic Microwave Background Polarization Results
We present the analysis of the complete 3-year data set obtained with the Degree Angular Scale Interferometer (DASI) polarization experiment, operating from the Amundsen-Scott South Pole research station. Additional data obtained at the end of the 2002 Austral winter and throughout the 2003 season w...
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ftcern:oai:cds.cern.ch:793278 2023-05-15T13:24:26+02:00 DASI Three-Year Cosmic Microwave Background Polarization Results Leitch, E M Kovács, J M Halverson, N W Carlstrom, J E Pryke, C L Smith, M W E 2004-09-15 http://cds.cern.ch/record/793278 eng eng http://cds.cern.ch/record/793278 astro-ph/0409357 oai:cds.cern.ch:793278 Astrophysics and Astronomy 2004 ftcern 2018-07-28T06:55:09Z We present the analysis of the complete 3-year data set obtained with the Degree Angular Scale Interferometer (DASI) polarization experiment, operating from the Amundsen-Scott South Pole research station. Additional data obtained at the end of the 2002 Austral winter and throughout the 2003 season were added to the data from which the first detection of polarization of the cosmic microwave background radiation was reported. The analysis of the combined data supports, with increased statistical power, all of the conclusions drawn from the initial data set. In particular, the detection of E-mode polarization is increased to 6.3 sigma confidence level, TE cross-polarization is detected at 2.9 sigma, and B-mode polarization is consistent with zero, with an upper limit well below the level of the detected E-mode polarization. The results are in excellent agreement with the predictions of the cosmological model that has emerged from CMB temperature measurements. The analysis also demonstrates that contamination of the data by known sources of foreground emission is insignificant. Other/Unknown Material Amundsen-Scott South pole CERN Document Server (CDS) Amundsen-Scott ENVELOPE(0.000,0.000,-90.000,-90.000) Austral South Pole |
institution |
Open Polar |
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CERN Document Server (CDS) |
op_collection_id |
ftcern |
language |
English |
topic |
Astrophysics and Astronomy |
spellingShingle |
Astrophysics and Astronomy Leitch, E M Kovács, J M Halverson, N W Carlstrom, J E Pryke, C L Smith, M W E DASI Three-Year Cosmic Microwave Background Polarization Results |
topic_facet |
Astrophysics and Astronomy |
description |
We present the analysis of the complete 3-year data set obtained with the Degree Angular Scale Interferometer (DASI) polarization experiment, operating from the Amundsen-Scott South Pole research station. Additional data obtained at the end of the 2002 Austral winter and throughout the 2003 season were added to the data from which the first detection of polarization of the cosmic microwave background radiation was reported. The analysis of the combined data supports, with increased statistical power, all of the conclusions drawn from the initial data set. In particular, the detection of E-mode polarization is increased to 6.3 sigma confidence level, TE cross-polarization is detected at 2.9 sigma, and B-mode polarization is consistent with zero, with an upper limit well below the level of the detected E-mode polarization. The results are in excellent agreement with the predictions of the cosmological model that has emerged from CMB temperature measurements. The analysis also demonstrates that contamination of the data by known sources of foreground emission is insignificant. |
author |
Leitch, E M Kovács, J M Halverson, N W Carlstrom, J E Pryke, C L Smith, M W E |
author_facet |
Leitch, E M Kovács, J M Halverson, N W Carlstrom, J E Pryke, C L Smith, M W E |
author_sort |
Leitch, E M |
title |
DASI Three-Year Cosmic Microwave Background Polarization Results |
title_short |
DASI Three-Year Cosmic Microwave Background Polarization Results |
title_full |
DASI Three-Year Cosmic Microwave Background Polarization Results |
title_fullStr |
DASI Three-Year Cosmic Microwave Background Polarization Results |
title_full_unstemmed |
DASI Three-Year Cosmic Microwave Background Polarization Results |
title_sort |
dasi three-year cosmic microwave background polarization results |
publishDate |
2004 |
url |
http://cds.cern.ch/record/793278 |
long_lat |
ENVELOPE(0.000,0.000,-90.000,-90.000) |
geographic |
Amundsen-Scott Austral South Pole |
geographic_facet |
Amundsen-Scott Austral South Pole |
genre |
Amundsen-Scott South pole |
genre_facet |
Amundsen-Scott South pole |
op_relation |
http://cds.cern.ch/record/793278 astro-ph/0409357 oai:cds.cern.ch:793278 |
_version_ |
1766379645284909056 |