Detection of CMB-Cluster Lensing using Polarization Data from SPTpol

SPTpol and DES Collaboration

doi:10.1103/PhysRevLett.123.181301

Detection of CMB-Cluster Lensing using Polarization Data from SPTpol

SPTpol and DES Collaboration

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

We report the first detection of gravitational lensing due to galaxy clusters using only the polarization of the cosmic microwave background (CMB). The lensing signal is obtained using a new estimator that extracts the lensing dipole signature from stacked images formed by rotating the cluster-centered Stokes QU map cutouts along the direction of the locally measured background CMB polarization gradient. Using data from the SPTpol 500 deg2 survey at the locations of roughly 18 000 clusters with richness λ≥10 from the Dark Energy Survey (DES) Year-3 full galaxy cluster catalog, we detect lensing at 4.8σ. The mean stacked mass of the selected sample is found to be (1.43±0.40)×1014MȮ which is in good agreement with optical weak lensing based estimates using DES data and CMB-lensing based estimates using SPTpol temperature data. This measurement is a key first step for cluster cosmology with future low-noise CMB surveys, like CMB-S4, for which CMB polarization will be the primary channel for cluster lensing measurements.

Original language	English (US)
Article number	181301
Journal	Physical review letters
Volume	123
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.123.181301
State	Published - Oct 31 2019

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© 2019 American Physical Society.

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@article{b62a153ec1094b7d8e819c57803dbbaf,

title = "Detection of CMB-Cluster Lensing using Polarization Data from SPTpol",

abstract = "We report the first detection of gravitational lensing due to galaxy clusters using only the polarization of the cosmic microwave background (CMB). The lensing signal is obtained using a new estimator that extracts the lensing dipole signature from stacked images formed by rotating the cluster-centered Stokes QU map cutouts along the direction of the locally measured background CMB polarization gradient. Using data from the SPTpol 500 deg2 survey at the locations of roughly 18 000 clusters with richness λ≥10 from the Dark Energy Survey (DES) Year-3 full galaxy cluster catalog, we detect lensing at 4.8σ. The mean stacked mass of the selected sample is found to be (1.43±0.40)×1014MȮ which is in good agreement with optical weak lensing based estimates using DES data and CMB-lensing based estimates using SPTpol temperature data. This measurement is a key first step for cluster cosmology with future low-noise CMB surveys, like CMB-S4, for which CMB polarization will be the primary channel for cluster lensing measurements.",

author = "{SPTpol and DES Collaboration} and S. Raghunathan and S. Patil and E. Baxter and Benson, {B. A.} and Bleem, {L. E.} and Crawford, {T. M.} and Holder, {G. P.} and T. McClintock and Reichardt, {C. L.} and Varga, {T. N.} and N. Whitehorn and Ade, {P. A.R.} and S. Allam and Anderson, {A. J.} and Austermann, {J. E.} and S. Avila and Avva, {J. S.} and D. Bacon and Beall, {J. A.} and Bender, {A. N.} and F. Bianchini and S. Bocquet and D. Brooks and Burke, {D. L.} and Carlstrom, {J. E.} and J. Carretero and Castander, {F. J.} and Chang, {C. L.} and Chiang, {H. C.} and R. Citron and M. Costanzi and Crites, {A. T.} and {Da Costa}, {L. N.} and S. Desai and Diehl, {H. T.} and Dietrich, {J. P.} and Dobbs, {M. A.} and P. Doel and S. Everett and Evrard, {A. E.} and C. Feng and B. Flaugher and P. Fosalba and J. Frieman and J. Gallicchio and J. Garc{\'i}a-Bellido and E. Gaztanaga and George, {E. M.} and T. Giannantonio and C. Pryke",

note = "Publisher Copyright: {\textcopyright} 2019 American Physical Society.",

year = "2019",

month = oct,

day = "31",

doi = "10.1103/PhysRevLett.123.181301",

language = "English (US)",

volume = "123",

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T1 - Detection of CMB-Cluster Lensing using Polarization Data from SPTpol

AU - SPTpol and DES Collaboration

AU - Raghunathan, S.

AU - Patil, S.

AU - Baxter, E.

AU - Benson, B. A.

AU - Bleem, L. E.

AU - Crawford, T. M.

AU - Holder, G. P.

AU - McClintock, T.

AU - Reichardt, C. L.

AU - Varga, T. N.

AU - Whitehorn, N.

AU - Ade, P. A.R.

AU - Allam, S.

AU - Anderson, A. J.

AU - Austermann, J. E.

AU - Avila, S.

AU - Avva, J. S.

AU - Bacon, D.

AU - Beall, J. A.

AU - Bender, A. N.

AU - Bianchini, F.

AU - Bocquet, S.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carlstrom, J. E.

AU - Carretero, J.

AU - Castander, F. J.

AU - Chang, C. L.

AU - Chiang, H. C.

AU - Citron, R.

AU - Costanzi, M.

AU - Crites, A. T.

AU - Da Costa, L. N.

AU - Desai, S.

AU - Diehl, H. T.

AU - Dietrich, J. P.

AU - Dobbs, M. A.

AU - Doel, P.

AU - Everett, S.

AU - Evrard, A. E.

AU - Feng, C.

AU - Flaugher, B.

AU - Fosalba, P.

AU - Frieman, J.

AU - Gallicchio, J.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - George, E. M.

AU - Giannantonio, T.

AU - Pryke, C.

PY - 2019/10/31

Y1 - 2019/10/31

N2 - We report the first detection of gravitational lensing due to galaxy clusters using only the polarization of the cosmic microwave background (CMB). The lensing signal is obtained using a new estimator that extracts the lensing dipole signature from stacked images formed by rotating the cluster-centered Stokes QU map cutouts along the direction of the locally measured background CMB polarization gradient. Using data from the SPTpol 500 deg2 survey at the locations of roughly 18 000 clusters with richness λ≥10 from the Dark Energy Survey (DES) Year-3 full galaxy cluster catalog, we detect lensing at 4.8σ. The mean stacked mass of the selected sample is found to be (1.43±0.40)×1014MȮ which is in good agreement with optical weak lensing based estimates using DES data and CMB-lensing based estimates using SPTpol temperature data. This measurement is a key first step for cluster cosmology with future low-noise CMB surveys, like CMB-S4, for which CMB polarization will be the primary channel for cluster lensing measurements.

AB - We report the first detection of gravitational lensing due to galaxy clusters using only the polarization of the cosmic microwave background (CMB). The lensing signal is obtained using a new estimator that extracts the lensing dipole signature from stacked images formed by rotating the cluster-centered Stokes QU map cutouts along the direction of the locally measured background CMB polarization gradient. Using data from the SPTpol 500 deg2 survey at the locations of roughly 18 000 clusters with richness λ≥10 from the Dark Energy Survey (DES) Year-3 full galaxy cluster catalog, we detect lensing at 4.8σ. The mean stacked mass of the selected sample is found to be (1.43±0.40)×1014MȮ which is in good agreement with optical weak lensing based estimates using DES data and CMB-lensing based estimates using SPTpol temperature data. This measurement is a key first step for cluster cosmology with future low-noise CMB surveys, like CMB-S4, for which CMB polarization will be the primary channel for cluster lensing measurements.

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DO - 10.1103/PhysRevLett.123.181301

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VL - 123

JO - Physical review letters

JF - Physical review letters

IS - 18

M1 - 181301

ER -

Detection of CMB-Cluster Lensing using Polarization Data from SPTpol

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