Scientific optimization of a ground-based CMB polarization experiment
We investigate the science goals achievable with the upcoming generation of ground-based cosmic microwave background polarization experiments, focusing on one particular experiment, QUaD [QUEST (Q and U Extragalactic Submillimetre Telescope) and DASI (Degree Angular Scale Interferometer)], a propose...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Oxford University Press
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Online Access: | http://hdl.handle.net/11573/1476700 https://doi.org/10.1111/j.1365-2966.2004.07506.x |
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ftunivromairis:oai:iris.uniroma1.it:11573/1476700 2024-02-11T10:08:42+01:00 Scientific optimization of a ground-based CMB polarization experiment Bowden M. Taylor A. N. Ganga K. M. Ade P. A. R. Bock J. J. Cahill G. Carlstrom J. E. Church S. E. Gear W. K. Hinderks J. R. Hu W. Keating B. G. Kovac J. Lange A. E. Leitch E. M. Maffei B. Mallie O. E. Melhuish S. J. Murphy J. A. Pisano G. Piccirillo L. Pryke C. Rusholme B. A. O'Sullivan C. Thompson K. Bowden, M. Taylor, A. N. Ganga, K. M. Ade, P. A. R. Bock, J. J. Cahill, G. Carlstrom, J. E. Church, S. E. Gear, W. K. Hinderks, J. R. Hu, W. Keating, B. G. Kovac, J. Lange, A. E. Leitch, E. M. Maffei, B. Mallie, O. E. Melhuish, S. J. Murphy, J. A. Pisano, G. Piccirillo, L. Pryke, C. Rusholme, B. A. O'Sullivan, C. Thompson, K. 2004 http://hdl.handle.net/11573/1476700 https://doi.org/10.1111/j.1365-2966.2004.07506.x eng eng Oxford University Press info:eu-repo/semantics/altIdentifier/wos/WOS:000220152700034 volume:349 issue:1 firstpage:321 lastpage:335 numberofpages:15 journal:MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY http://hdl.handle.net/11573/1476700 doi:10.1111/j.1365-2966.2004.07506.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-1842431484 Cosmic microwave background Cosmological parameter Methods: observational Polarization Techniques: polarimetric info:eu-repo/semantics/article 2004 ftunivromairis https://doi.org/10.1111/j.1365-2966.2004.07506.x 2024-01-24T18:03:34Z We investigate the science goals achievable with the upcoming generation of ground-based cosmic microwave background polarization experiments, focusing on one particular experiment, QUaD [QUEST (Q and U Extragalactic Submillimetre Telescope) and DASI (Degree Angular Scale Interferometer)], a proposed bolometric polarimeter operating from the South Pole. We calculate the optimal sky coverage for this experiment, including the effects of foregrounds and gravitational lensing. We find that an E-mode measurement will be sample-limited, whereas a B-mode measurement will be detector-noise-limited. We conclude that a 300 deg2 survey is an optimal compromise for a 2-yr experiment to measure both E and B modes, and that a ground-based polarization experiment can make an important contribution to B-mode surveys. QUaD can make a high significance measurement of the acoustic peaks in the E-mode spectrum, over a multipole range of 25 < ℓ < 2500, and will be able to detect the gravitational lensing signal in the B-mode spectrum. Such an experiment could also directly detect the gravitational wave component of the B-mode spectrum if the amplitude of the signal is close to current upper limits. We also investigate how QUaD can improve constraints on the cosmological parameters. We estimate that combining two years of QUaD data with the 4-yr Wilkinson Microwave Anisotropy Probe (WMAP) data can improve constraints on Ωbh2, Ωmh2, h, r and ns by a factor of 2. If the foreground contamination can be reduced, the measurement of r can be improved by up to a factor of 6 over that obtainable from WMAP alone. These improved accuracies will place strong constraints on the potential of the inflaton field. Article in Journal/Newspaper South pole Sapienza Università di Roma: CINECA IRIS South Pole Wilkinson ENVELOPE(-66.200,-66.200,-66.817,-66.817) Monthly Notices of the Royal Astronomical Society 349 1 321 335 |
institution |
Open Polar |
collection |
Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
topic |
Cosmic microwave background Cosmological parameter Methods: observational Polarization Techniques: polarimetric |
spellingShingle |
Cosmic microwave background Cosmological parameter Methods: observational Polarization Techniques: polarimetric Bowden M. Taylor A. N. Ganga K. M. Ade P. A. R. Bock J. J. Cahill G. Carlstrom J. E. Church S. E. Gear W. K. Hinderks J. R. Hu W. Keating B. G. Kovac J. Lange A. E. Leitch E. M. Maffei B. Mallie O. E. Melhuish S. J. Murphy J. A. Pisano G. Piccirillo L. Pryke C. Rusholme B. A. O'Sullivan C. Thompson K. Scientific optimization of a ground-based CMB polarization experiment |
topic_facet |
Cosmic microwave background Cosmological parameter Methods: observational Polarization Techniques: polarimetric |
description |
We investigate the science goals achievable with the upcoming generation of ground-based cosmic microwave background polarization experiments, focusing on one particular experiment, QUaD [QUEST (Q and U Extragalactic Submillimetre Telescope) and DASI (Degree Angular Scale Interferometer)], a proposed bolometric polarimeter operating from the South Pole. We calculate the optimal sky coverage for this experiment, including the effects of foregrounds and gravitational lensing. We find that an E-mode measurement will be sample-limited, whereas a B-mode measurement will be detector-noise-limited. We conclude that a 300 deg2 survey is an optimal compromise for a 2-yr experiment to measure both E and B modes, and that a ground-based polarization experiment can make an important contribution to B-mode surveys. QUaD can make a high significance measurement of the acoustic peaks in the E-mode spectrum, over a multipole range of 25 < ℓ < 2500, and will be able to detect the gravitational lensing signal in the B-mode spectrum. Such an experiment could also directly detect the gravitational wave component of the B-mode spectrum if the amplitude of the signal is close to current upper limits. We also investigate how QUaD can improve constraints on the cosmological parameters. We estimate that combining two years of QUaD data with the 4-yr Wilkinson Microwave Anisotropy Probe (WMAP) data can improve constraints on Ωbh2, Ωmh2, h, r and ns by a factor of 2. If the foreground contamination can be reduced, the measurement of r can be improved by up to a factor of 6 over that obtainable from WMAP alone. These improved accuracies will place strong constraints on the potential of the inflaton field. |
author2 |
Bowden, M. Taylor, A. N. Ganga, K. M. Ade, P. A. R. Bock, J. J. Cahill, G. Carlstrom, J. E. Church, S. E. Gear, W. K. Hinderks, J. R. Hu, W. Keating, B. G. Kovac, J. Lange, A. E. Leitch, E. M. Maffei, B. Mallie, O. E. Melhuish, S. J. Murphy, J. A. Pisano, G. Piccirillo, L. Pryke, C. Rusholme, B. A. O'Sullivan, C. Thompson, K. |
format |
Article in Journal/Newspaper |
author |
Bowden M. Taylor A. N. Ganga K. M. Ade P. A. R. Bock J. J. Cahill G. Carlstrom J. E. Church S. E. Gear W. K. Hinderks J. R. Hu W. Keating B. G. Kovac J. Lange A. E. Leitch E. M. Maffei B. Mallie O. E. Melhuish S. J. Murphy J. A. Pisano G. Piccirillo L. Pryke C. Rusholme B. A. O'Sullivan C. Thompson K. |
author_facet |
Bowden M. Taylor A. N. Ganga K. M. Ade P. A. R. Bock J. J. Cahill G. Carlstrom J. E. Church S. E. Gear W. K. Hinderks J. R. Hu W. Keating B. G. Kovac J. Lange A. E. Leitch E. M. Maffei B. Mallie O. E. Melhuish S. J. Murphy J. A. Pisano G. Piccirillo L. Pryke C. Rusholme B. A. O'Sullivan C. Thompson K. |
author_sort |
Bowden M. |
title |
Scientific optimization of a ground-based CMB polarization experiment |
title_short |
Scientific optimization of a ground-based CMB polarization experiment |
title_full |
Scientific optimization of a ground-based CMB polarization experiment |
title_fullStr |
Scientific optimization of a ground-based CMB polarization experiment |
title_full_unstemmed |
Scientific optimization of a ground-based CMB polarization experiment |
title_sort |
scientific optimization of a ground-based cmb polarization experiment |
publisher |
Oxford University Press |
publishDate |
2004 |
url |
http://hdl.handle.net/11573/1476700 https://doi.org/10.1111/j.1365-2966.2004.07506.x |
long_lat |
ENVELOPE(-66.200,-66.200,-66.817,-66.817) |
geographic |
South Pole Wilkinson |
geographic_facet |
South Pole Wilkinson |
genre |
South pole |
genre_facet |
South pole |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000220152700034 volume:349 issue:1 firstpage:321 lastpage:335 numberofpages:15 journal:MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY http://hdl.handle.net/11573/1476700 doi:10.1111/j.1365-2966.2004.07506.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-1842431484 |
op_doi |
https://doi.org/10.1111/j.1365-2966.2004.07506.x |
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Monthly Notices of the Royal Astronomical Society |
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349 |
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321 |
op_container_end_page |
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