A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data
We present a measurement of the cosmic microwave background lensing potential using 500 deg² of 150 GHz data from the SPTpol receiver on the South Pole Telescope. The lensing potential is reconstructed with signal-to-noise per mode greater than unity at lensing multipoles L ≾ 250, using a quadratic...
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ftcaltechauth:oai:authors.library.caltech.edu:99251 2023-05-15T18:22:44+02:00 A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data Wu, W. L. K. Moran, C. Corbett Crites, A. T. Padin, S. 2019-10-10 application/pdf https://authors.library.caltech.edu/99251/ https://authors.library.caltech.edu/99251/1/Wu_2019_ApJ_884_70.pdf https://authors.library.caltech.edu/99251/2/1905.05777.pdf https://resolver.caltech.edu/CaltechAUTHORS:20191014-111719097 en eng American Astronomical Society https://authors.library.caltech.edu/99251/1/Wu_2019_ApJ_884_70.pdf https://authors.library.caltech.edu/99251/2/1905.05777.pdf Wu, W. L. K. and Moran, C. Corbett and Crites, A. T. and Padin, S. (2019) A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data. Astrophysical Journal, 884 (1). Art. No. 70. ISSN 1538-4357. doi:10.3847/1538-4357/ab4186. https://resolver.caltech.edu/CaltechAUTHORS:20191014-111719097 <https://resolver.caltech.edu/CaltechAUTHORS:20191014-111719097> other Article PeerReviewed 2019 ftcaltechauth https://doi.org/10.3847/1538-4357/ab4186 2021-11-18T18:52:42Z We present a measurement of the cosmic microwave background lensing potential using 500 deg² of 150 GHz data from the SPTpol receiver on the South Pole Telescope. The lensing potential is reconstructed with signal-to-noise per mode greater than unity at lensing multipoles L ≾ 250, using a quadratic estimator on a combination of cosmic microwave background temperature and polarization maps. We report measurements of the lensing potential power spectrum in the multipole range of 100 < L < 2000 from sets of temperature-only (T), polarization-only (POL), and minimum-variance (MV) estimators. We measure the lensing amplitude by taking the ratio of the measured spectrum to the expected spectrum from the best-fit Λ cold dark matter model to the Planck 2015 TT + low P + lensing data set. For the minimum-variance estimator, we find A_(MV) = 0.944±0.058(Stat.)±0.025(Sys.) restricting to only polarization data, we find A_(POL) = 0.906±0.090(Stat.)±0.040(Sys.). Considering statistical uncertainties alone, this is the most precise polarization-only lensing amplitude constraint to date (10.1σ) and is more precise than our temperature-only constraint. We perform null tests and consistency checks and find no evidence for significant contamination. Article in Journal/Newspaper South pole Caltech Authors (California Institute of Technology) South Pole The Astrophysical Journal 884 1 70 |
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Open Polar |
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Caltech Authors (California Institute of Technology) |
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ftcaltechauth |
language |
English |
description |
We present a measurement of the cosmic microwave background lensing potential using 500 deg² of 150 GHz data from the SPTpol receiver on the South Pole Telescope. The lensing potential is reconstructed with signal-to-noise per mode greater than unity at lensing multipoles L ≾ 250, using a quadratic estimator on a combination of cosmic microwave background temperature and polarization maps. We report measurements of the lensing potential power spectrum in the multipole range of 100 < L < 2000 from sets of temperature-only (T), polarization-only (POL), and minimum-variance (MV) estimators. We measure the lensing amplitude by taking the ratio of the measured spectrum to the expected spectrum from the best-fit Λ cold dark matter model to the Planck 2015 TT + low P + lensing data set. For the minimum-variance estimator, we find A_(MV) = 0.944±0.058(Stat.)±0.025(Sys.) restricting to only polarization data, we find A_(POL) = 0.906±0.090(Stat.)±0.040(Sys.). Considering statistical uncertainties alone, this is the most precise polarization-only lensing amplitude constraint to date (10.1σ) and is more precise than our temperature-only constraint. We perform null tests and consistency checks and find no evidence for significant contamination. |
format |
Article in Journal/Newspaper |
author |
Wu, W. L. K. Moran, C. Corbett Crites, A. T. Padin, S. |
spellingShingle |
Wu, W. L. K. Moran, C. Corbett Crites, A. T. Padin, S. A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data |
author_facet |
Wu, W. L. K. Moran, C. Corbett Crites, A. T. Padin, S. |
author_sort |
Wu, W. L. K. |
title |
A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data |
title_short |
A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data |
title_full |
A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data |
title_fullStr |
A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data |
title_full_unstemmed |
A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data |
title_sort |
measurement of the cosmic microwave background lensing potential and power spectrum from 500 deg² of sptpol temperature and polarization data |
publisher |
American Astronomical Society |
publishDate |
2019 |
url |
https://authors.library.caltech.edu/99251/ https://authors.library.caltech.edu/99251/1/Wu_2019_ApJ_884_70.pdf https://authors.library.caltech.edu/99251/2/1905.05777.pdf https://resolver.caltech.edu/CaltechAUTHORS:20191014-111719097 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://authors.library.caltech.edu/99251/1/Wu_2019_ApJ_884_70.pdf https://authors.library.caltech.edu/99251/2/1905.05777.pdf Wu, W. L. K. and Moran, C. Corbett and Crites, A. T. and Padin, S. (2019) A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg² of SPTpol Temperature and Polarization Data. Astrophysical Journal, 884 (1). Art. No. 70. ISSN 1538-4357. doi:10.3847/1538-4357/ab4186. https://resolver.caltech.edu/CaltechAUTHORS:20191014-111719097 <https://resolver.caltech.edu/CaltechAUTHORS:20191014-111719097> |
op_rights |
other |
op_doi |
https://doi.org/10.3847/1538-4357/ab4186 |
container_title |
The Astrophysical Journal |
container_volume |
884 |
container_issue |
1 |
container_start_page |
70 |
_version_ |
1766202147741892608 |