A New Limit on CMB Circular Polarization from SPIDER
We present a new upper limit on cosmic microwave background (CMB) circular polarization from the 2015 flight of SPIDER, a balloon-borne telescope designed to search for B-mode linear polarization from cosmic inflation. Although the level of circular polarization in the CMB is predicted to be very sm...
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ftcaltechauth:oai:authors.library.caltech.edu:79749 2023-05-15T13:55:46+02:00 A New Limit on CMB Circular Polarization from SPIDER Nagy, J. M. Bock, J. J. Doré, O. Hristov, V. V. Mason, P. V. Moncelsi, L. Morford, T. A. Trangsrud, A. Tucker, R. S. 2017-08-01 application/pdf https://authors.library.caltech.edu/79749/ https://authors.library.caltech.edu/79749/1/Nagy_2017_ApJ_844_151.pdf https://authors.library.caltech.edu/79749/2/1704.00215.pdf https://resolver.caltech.edu/CaltechAUTHORS:20170802-102243947 en eng American Astronomical Society https://authors.library.caltech.edu/79749/1/Nagy_2017_ApJ_844_151.pdf https://authors.library.caltech.edu/79749/2/1704.00215.pdf Nagy, J. M. and Bock, J. J. and Doré, O. and Hristov, V. V. and Mason, P. V. and Moncelsi, L. and Morford, T. A. and Trangsrud, A. and Tucker, R. S. (2017) A New Limit on CMB Circular Polarization from SPIDER. Astrophysical Journal, 844 (2). Art. No. 151. ISSN 1538-4357. doi:10.3847/1538-4357/aa7cfd. https://resolver.caltech.edu/CaltechAUTHORS:20170802-102243947 <https://resolver.caltech.edu/CaltechAUTHORS:20170802-102243947> other Article PeerReviewed 2017 ftcaltechauth https://doi.org/10.3847/1538-4357/aa7cfd 2021-11-18T18:43:10Z We present a new upper limit on cosmic microwave background (CMB) circular polarization from the 2015 flight of SPIDER, a balloon-borne telescope designed to search for B-mode linear polarization from cosmic inflation. Although the level of circular polarization in the CMB is predicted to be very small, experimental limits provide a valuable test of the underlying models. By exploiting the nonzero circular-to-linear polarization coupling of the half-wave plate polarization modulators, data from SPIDER's 2015 Antarctic flight provide a constraint on Stokes V at 95 and 150 GHz in the range 33 < ℓ < 307. No other limits exist over this full range of angular scales, and SPIDER improves on the previous limit by several orders of magnitude, providing 95% C.L. constraints on ℓ(ℓ + 1)C^(VV)_ ℓ/(2π) ranging from 141 to 255 μK^2 at 150 GHz for a thermal CMB spectrum. As linear CMB polarization experiments become increasingly sensitive, the techniques described in this paper can be applied to obtain even stronger constraints on circular polarization. Article in Journal/Newspaper Antarc* Antarctic Caltech Authors (California Institute of Technology) Antarctic The Astrophysical Journal 844 2 151 |
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English |
description |
We present a new upper limit on cosmic microwave background (CMB) circular polarization from the 2015 flight of SPIDER, a balloon-borne telescope designed to search for B-mode linear polarization from cosmic inflation. Although the level of circular polarization in the CMB is predicted to be very small, experimental limits provide a valuable test of the underlying models. By exploiting the nonzero circular-to-linear polarization coupling of the half-wave plate polarization modulators, data from SPIDER's 2015 Antarctic flight provide a constraint on Stokes V at 95 and 150 GHz in the range 33 < ℓ < 307. No other limits exist over this full range of angular scales, and SPIDER improves on the previous limit by several orders of magnitude, providing 95% C.L. constraints on ℓ(ℓ + 1)C^(VV)_ ℓ/(2π) ranging from 141 to 255 μK^2 at 150 GHz for a thermal CMB spectrum. As linear CMB polarization experiments become increasingly sensitive, the techniques described in this paper can be applied to obtain even stronger constraints on circular polarization. |
format |
Article in Journal/Newspaper |
author |
Nagy, J. M. Bock, J. J. Doré, O. Hristov, V. V. Mason, P. V. Moncelsi, L. Morford, T. A. Trangsrud, A. Tucker, R. S. |
spellingShingle |
Nagy, J. M. Bock, J. J. Doré, O. Hristov, V. V. Mason, P. V. Moncelsi, L. Morford, T. A. Trangsrud, A. Tucker, R. S. A New Limit on CMB Circular Polarization from SPIDER |
author_facet |
Nagy, J. M. Bock, J. J. Doré, O. Hristov, V. V. Mason, P. V. Moncelsi, L. Morford, T. A. Trangsrud, A. Tucker, R. S. |
author_sort |
Nagy, J. M. |
title |
A New Limit on CMB Circular Polarization from SPIDER |
title_short |
A New Limit on CMB Circular Polarization from SPIDER |
title_full |
A New Limit on CMB Circular Polarization from SPIDER |
title_fullStr |
A New Limit on CMB Circular Polarization from SPIDER |
title_full_unstemmed |
A New Limit on CMB Circular Polarization from SPIDER |
title_sort |
new limit on cmb circular polarization from spider |
publisher |
American Astronomical Society |
publishDate |
2017 |
url |
https://authors.library.caltech.edu/79749/ https://authors.library.caltech.edu/79749/1/Nagy_2017_ApJ_844_151.pdf https://authors.library.caltech.edu/79749/2/1704.00215.pdf https://resolver.caltech.edu/CaltechAUTHORS:20170802-102243947 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://authors.library.caltech.edu/79749/1/Nagy_2017_ApJ_844_151.pdf https://authors.library.caltech.edu/79749/2/1704.00215.pdf Nagy, J. M. and Bock, J. J. and Doré, O. and Hristov, V. V. and Mason, P. V. and Moncelsi, L. and Morford, T. A. and Trangsrud, A. and Tucker, R. S. (2017) A New Limit on CMB Circular Polarization from SPIDER. Astrophysical Journal, 844 (2). Art. No. 151. ISSN 1538-4357. doi:10.3847/1538-4357/aa7cfd. https://resolver.caltech.edu/CaltechAUTHORS:20170802-102243947 <https://resolver.caltech.edu/CaltechAUTHORS:20170802-102243947> |
op_rights |
other |
op_doi |
https://doi.org/10.3847/1538-4357/aa7cfd |
container_title |
The Astrophysical Journal |
container_volume |
844 |
container_issue |
2 |
container_start_page |
151 |
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1766262604749078528 |