A 2500 deg 2 CMB Lensing Map from Combined South Pole Telescope and Planck Data
We present a cosmic microwave background (CMB) lensing map produced from a linear combination of South Pole Telescope (SPT) and \emph{Planck} temperature data. The 150 GHz temperature data from the $2500\ {\rm deg}^{2}$ SPT-SZ survey is combined with the \emph{Planck} 143 GHz data in harmonic space,...
Published in: | The Astrophysical Journal |
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2022
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Online Access: | http://www.osti.gov/servlets/purl/1358105 https://www.osti.gov/biblio/1358105 https://doi.org/10.3847/1538-4357/aa8d1d |
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ftosti:oai:osti.gov:1358105 2023-07-30T04:06:52+02:00 A 2500 deg 2 CMB Lensing Map from Combined South Pole Telescope and Planck Data Omori, Y. Chown, R. Simard, G. Story, K. T. Aylor, K. Baxter, E. J. Benson, B. A. Bleem, L. E. Carlstrom, J. E. Chang, C. L. Cho, H-M. Crawford, T. M. Crites, A. T. Haan, T. de Dobbs, M. A. Everett, W. B. George, E. M. Halverson, N. W. Harrington, N. L. Holder, G. P. Hou, Z. Holzapfel, W. L. Hrubes, J. D. Knox, L. Lee, A. T. Leitch, E. M. Luong-Van, D. Manzotti, A. Marrone, D. P. McMahon, J. J. Meyer, S. S. Mocanu, L. M. Mohr, J. J. Natoli, T. Padin, S. Pryke, C. Reichardt, C. L. Ruhl, J. E. Sayre, J. T. Schaffer, K. K. Shirokoff, E. Staniszewski, Z. Stark, A. A. Vanderlinde, K. Vieira, J. D. Williamson, R. Zahn, O. 2022-05-23 application/pdf http://www.osti.gov/servlets/purl/1358105 https://www.osti.gov/biblio/1358105 https://doi.org/10.3847/1538-4357/aa8d1d unknown http://www.osti.gov/servlets/purl/1358105 https://www.osti.gov/biblio/1358105 https://doi.org/10.3847/1538-4357/aa8d1d doi:10.3847/1538-4357/aa8d1d 79 ASTRONOMY AND ASTROPHYSICS 2022 ftosti https://doi.org/10.3847/1538-4357/aa8d1d 2023-07-11T09:18:43Z We present a cosmic microwave background (CMB) lensing map produced from a linear combination of South Pole Telescope (SPT) and \emph{Planck} temperature data. The 150 GHz temperature data from the $2500\ {\rm deg}^{2}$ SPT-SZ survey is combined with the \emph{Planck} 143 GHz data in harmonic space, to obtain a temperature map that has a broader $\ell$ coverage and less noise than either individual map. Using a quadratic estimator technique on this combined temperature map, we produce a map of the gravitational lensing potential projected along the line of sight. We measure the auto-spectrum of the lensing potential $C_{L}^{\phi\phi}$, and compare it to the theoretical prediction for a $\Lambda$CDM cosmology consistent with the \emph{Planck} 2015 data set, finding a best-fit amplitude of $0.95_{-0.06}^{+0.06}({\rm Stat.})\! _{-0.01}^{+0.01}({\rm Sys.})$. The null hypothesis of no lensing is rejected at a significance of $24\,\sigma$. One important use of such a lensing potential map is in cross-correlations with other dark matter tracers. We demonstrate this cross-correlation in practice by calculating the cross-spectrum, $C_{L}^{\phi G}$, between the SPT+\emph{Planck} lensing map and Wide-field Infrared Survey Explorer (\emph{WISE}) galaxies. We fit $C_{L}^{\phi G}$ to a power law of the form $p_{L}=a(L/L_{0})^{-b}$ with $a=2.15 \times 10^{-8}$, $b=1.35$, $L_{0}=490$, and find $\eta^{\phi G}=0.94^{+0.04}_{-0.04}$, which is marginally lower, but in good agreement with $\eta^{\phi G}=1.00^{+0.02}_{-0.01}$, the best-fit amplitude for the cross-correlation of \emph{Planck}-2015 CMB lensing and \emph{WISE} galaxies over $\sim67\%$ of the sky. The lensing potential map presented here will be used for cross-correlation studies with the Dark Energy Survey (DES), whose footprint nearly completely covers the SPT $2500\ {\rm deg}^2$ field. Other/Unknown Material South pole SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) South Pole Lambda ENVELOPE(-62.983,-62.983,-64.300,-64.300) Eta ENVELOPE(-62.917,-62.917,-64.300,-64.300) The Astrophysical Journal 849 2 124 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
79 ASTRONOMY AND ASTROPHYSICS |
spellingShingle |
79 ASTRONOMY AND ASTROPHYSICS Omori, Y. Chown, R. Simard, G. Story, K. T. Aylor, K. Baxter, E. J. Benson, B. A. Bleem, L. E. Carlstrom, J. E. Chang, C. L. Cho, H-M. Crawford, T. M. Crites, A. T. Haan, T. de Dobbs, M. A. Everett, W. B. George, E. M. Halverson, N. W. Harrington, N. L. Holder, G. P. Hou, Z. Holzapfel, W. L. Hrubes, J. D. Knox, L. Lee, A. T. Leitch, E. M. Luong-Van, D. Manzotti, A. Marrone, D. P. McMahon, J. J. Meyer, S. S. Mocanu, L. M. Mohr, J. J. Natoli, T. Padin, S. Pryke, C. Reichardt, C. L. Ruhl, J. E. Sayre, J. T. Schaffer, K. K. Shirokoff, E. Staniszewski, Z. Stark, A. A. Vanderlinde, K. Vieira, J. D. Williamson, R. Zahn, O. A 2500 deg 2 CMB Lensing Map from Combined South Pole Telescope and Planck Data |
topic_facet |
79 ASTRONOMY AND ASTROPHYSICS |
description |
We present a cosmic microwave background (CMB) lensing map produced from a linear combination of South Pole Telescope (SPT) and \emph{Planck} temperature data. The 150 GHz temperature data from the $2500\ {\rm deg}^{2}$ SPT-SZ survey is combined with the \emph{Planck} 143 GHz data in harmonic space, to obtain a temperature map that has a broader $\ell$ coverage and less noise than either individual map. Using a quadratic estimator technique on this combined temperature map, we produce a map of the gravitational lensing potential projected along the line of sight. We measure the auto-spectrum of the lensing potential $C_{L}^{\phi\phi}$, and compare it to the theoretical prediction for a $\Lambda$CDM cosmology consistent with the \emph{Planck} 2015 data set, finding a best-fit amplitude of $0.95_{-0.06}^{+0.06}({\rm Stat.})\! _{-0.01}^{+0.01}({\rm Sys.})$. The null hypothesis of no lensing is rejected at a significance of $24\,\sigma$. One important use of such a lensing potential map is in cross-correlations with other dark matter tracers. We demonstrate this cross-correlation in practice by calculating the cross-spectrum, $C_{L}^{\phi G}$, between the SPT+\emph{Planck} lensing map and Wide-field Infrared Survey Explorer (\emph{WISE}) galaxies. We fit $C_{L}^{\phi G}$ to a power law of the form $p_{L}=a(L/L_{0})^{-b}$ with $a=2.15 \times 10^{-8}$, $b=1.35$, $L_{0}=490$, and find $\eta^{\phi G}=0.94^{+0.04}_{-0.04}$, which is marginally lower, but in good agreement with $\eta^{\phi G}=1.00^{+0.02}_{-0.01}$, the best-fit amplitude for the cross-correlation of \emph{Planck}-2015 CMB lensing and \emph{WISE} galaxies over $\sim67\%$ of the sky. The lensing potential map presented here will be used for cross-correlation studies with the Dark Energy Survey (DES), whose footprint nearly completely covers the SPT $2500\ {\rm deg}^2$ field. |
author |
Omori, Y. Chown, R. Simard, G. Story, K. T. Aylor, K. Baxter, E. J. Benson, B. A. Bleem, L. E. Carlstrom, J. E. Chang, C. L. Cho, H-M. Crawford, T. M. Crites, A. T. Haan, T. de Dobbs, M. A. Everett, W. B. George, E. M. Halverson, N. W. Harrington, N. L. Holder, G. P. Hou, Z. Holzapfel, W. L. Hrubes, J. D. Knox, L. Lee, A. T. Leitch, E. M. Luong-Van, D. Manzotti, A. Marrone, D. P. McMahon, J. J. Meyer, S. S. Mocanu, L. M. Mohr, J. J. Natoli, T. Padin, S. Pryke, C. Reichardt, C. L. Ruhl, J. E. Sayre, J. T. Schaffer, K. K. Shirokoff, E. Staniszewski, Z. Stark, A. A. Vanderlinde, K. Vieira, J. D. Williamson, R. Zahn, O. |
author_facet |
Omori, Y. Chown, R. Simard, G. Story, K. T. Aylor, K. Baxter, E. J. Benson, B. A. Bleem, L. E. Carlstrom, J. E. Chang, C. L. Cho, H-M. Crawford, T. M. Crites, A. T. Haan, T. de Dobbs, M. A. Everett, W. B. George, E. M. Halverson, N. W. Harrington, N. L. Holder, G. P. Hou, Z. Holzapfel, W. L. Hrubes, J. D. Knox, L. Lee, A. T. Leitch, E. M. Luong-Van, D. Manzotti, A. Marrone, D. P. McMahon, J. J. Meyer, S. S. Mocanu, L. M. Mohr, J. J. Natoli, T. Padin, S. Pryke, C. Reichardt, C. L. Ruhl, J. E. Sayre, J. T. Schaffer, K. K. Shirokoff, E. Staniszewski, Z. Stark, A. A. Vanderlinde, K. Vieira, J. D. Williamson, R. Zahn, O. |
author_sort |
Omori, Y. |
title |
A 2500 deg 2 CMB Lensing Map from Combined South Pole Telescope and Planck Data |
title_short |
A 2500 deg 2 CMB Lensing Map from Combined South Pole Telescope and Planck Data |
title_full |
A 2500 deg 2 CMB Lensing Map from Combined South Pole Telescope and Planck Data |
title_fullStr |
A 2500 deg 2 CMB Lensing Map from Combined South Pole Telescope and Planck Data |
title_full_unstemmed |
A 2500 deg 2 CMB Lensing Map from Combined South Pole Telescope and Planck Data |
title_sort |
2500 deg 2 cmb lensing map from combined south pole telescope and planck data |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1358105 https://www.osti.gov/biblio/1358105 https://doi.org/10.3847/1538-4357/aa8d1d |
long_lat |
ENVELOPE(-62.983,-62.983,-64.300,-64.300) ENVELOPE(-62.917,-62.917,-64.300,-64.300) |
geographic |
South Pole Lambda Eta |
geographic_facet |
South Pole Lambda Eta |
genre |
South pole |
genre_facet |
South pole |
op_relation |
http://www.osti.gov/servlets/purl/1358105 https://www.osti.gov/biblio/1358105 https://doi.org/10.3847/1538-4357/aa8d1d doi:10.3847/1538-4357/aa8d1d |
op_doi |
https://doi.org/10.3847/1538-4357/aa8d1d |
container_title |
The Astrophysical Journal |
container_volume |
849 |
container_issue |
2 |
container_start_page |
124 |
_version_ |
1772819824015048704 |