A 2500 deg 2 CMB Lensing Map from Combined South Pole Telescope and Planck Data
Here, we present a cosmic microwave background (CMB) lensing map produced from a linear combination of South Pole Telescope (SPT) and Planck temperature data. The 150 GHz temperature data from the 2500 deg 2 SPT-SZ survey is combined with the Planck 143 GHz data in harmonic space to obtain a tempera...
Published in: | The Astrophysical Journal |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Language: | unknown |
Published: |
2022
|
Subjects: | |
Online Access: | http://www.osti.gov/servlets/purl/1410514 https://www.osti.gov/biblio/1410514 https://doi.org/10.3847/1538-4357/aa8d1d |
id |
ftosti:oai:osti.gov:1410514 |
---|---|
record_format |
openpolar |
spelling |
ftosti:oai:osti.gov:1410514 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/1410514 https://www.osti.gov/biblio/1410514 https://doi.org/10.3847/1538-4357/aa8d1d unknown http://www.osti.gov/servlets/purl/1410514 https://www.osti.gov/biblio/1410514 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 2023-07-11T09:22:59Z Here, we present a cosmic microwave background (CMB) lensing map produced from a linear combination of South Pole Telescope (SPT) and Planck temperature data. The 150 GHz temperature data from the 2500 deg 2 SPT-SZ survey is combined with the Planck 143 GHz data in harmonic space to obtain a temperature map that has a broader ℓ 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 ΛCDM cosmology consistent with the Planck 2015 data set, finding a best-fit amplitude of ${0.95}_{-0.06}^{+0.06}(\mathrm{stat}.{)}_{-0.01}^{+0.01}(\mathrm{sys}.)$. The null hypothesis of no lensing is rejected at a significance of 24σ. 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+Planck lensing map and Wide-field Infrared Survey Explorer (WISE) galaxies. We fit ${C}_{L}^{\phi G}$ to a power law of the form ${p}_{L}=a{(L/{L}_{0})}^{-b}$ with a, L 0, and b fixed, and find ${\eta }^{\phi G}={C}_{L}^{\phi G}/{p}_{L}={0.94}_{-0.04}^{+0.04}$, which is marginally lower, but in good agreement with ${\eta }^{\phi G}={1.00}_{-0.01}^{+0.02}$, the best-fit amplitude for the cross-correlation of Planck-2015 CMB lensing and WISE galaxies over ~67% of the sky. Finally, the lensing potential map presented here will be used for cross-correlation studies with the Dark Energy Survey, whose footprint nearly completely covers the SPT 2500 deg 2 field. Other/Unknown Material South pole SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Eta ENVELOPE(-62.917,-62.917,-64.300,-64.300) South Pole 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 |
Here, we present a cosmic microwave background (CMB) lensing map produced from a linear combination of South Pole Telescope (SPT) and Planck temperature data. The 150 GHz temperature data from the 2500 deg 2 SPT-SZ survey is combined with the Planck 143 GHz data in harmonic space to obtain a temperature map that has a broader ℓ 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 ΛCDM cosmology consistent with the Planck 2015 data set, finding a best-fit amplitude of ${0.95}_{-0.06}^{+0.06}(\mathrm{stat}.{)}_{-0.01}^{+0.01}(\mathrm{sys}.)$. The null hypothesis of no lensing is rejected at a significance of 24σ. 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+Planck lensing map and Wide-field Infrared Survey Explorer (WISE) galaxies. We fit ${C}_{L}^{\phi G}$ to a power law of the form ${p}_{L}=a{(L/{L}_{0})}^{-b}$ with a, L 0, and b fixed, and find ${\eta }^{\phi G}={C}_{L}^{\phi G}/{p}_{L}={0.94}_{-0.04}^{+0.04}$, which is marginally lower, but in good agreement with ${\eta }^{\phi G}={1.00}_{-0.01}^{+0.02}$, the best-fit amplitude for the cross-correlation of Planck-2015 CMB lensing and WISE galaxies over ~67% of the sky. Finally, the lensing potential map presented here will be used for cross-correlation studies with the Dark Energy Survey, whose footprint nearly completely covers the SPT 2500 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/1410514 https://www.osti.gov/biblio/1410514 https://doi.org/10.3847/1538-4357/aa8d1d |
long_lat |
ENVELOPE(-62.917,-62.917,-64.300,-64.300) |
geographic |
Eta South Pole |
geographic_facet |
Eta South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
http://www.osti.gov/servlets/purl/1410514 https://www.osti.gov/biblio/1410514 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_ |
1772819824338010112 |