A Detection of CMB-Cluster Lensing using Polarization Data from SPTpol
Creators: name: Raghunathan, S.
name: Patil, S.
name: Baxter, E.
name: Benson, B. A.
name: Bleem, L. E.
name: Crawford, T. M.
name: Holder, G. P.
name: McClintock, T.
name: Reichardt, C. L.
name: Varga, T. N.
name: Whitehorn, N.
name: Ade, P. A. R.
name: Allam, S.
name: Anderson, A. J.
name: Austermann, J. E.
name: Avila, S.
name: Avva, J. S.
name: Bacon, D.
name: Beall, J. A.
name: Bender, A. N.
name: Bianchini, F.
name: Bocquet, S.
name: Brooks, D.
name: Burke, D. L.
name: Carlstrom, J. E.
name: Carretero, J.
name: Castander, F. J.
name: Chang, C. L.
name: Chiang, H. C.
name: Citron, R.
name: Costanzi, M.
name: Crites, A. T.
name: da Costa, L. N.
name: Desai, S.
name: Diehl, H. T.
name: Dietrich, J. P.
name: Dobbs, M. A.
name: Doel, P.
name: Everett, S.
name: Evrard, A. E.
name: Feng, C.
name: Flaugher, B.
name: Fosalba, P.
name: Frieman, J.
name: Gallicchio, J.
name: García-Bellido, J.
name: Gaztanaga, E.
name: George, E. M.
name: Giannantonio, T.
name: Gilbert, A.
name: Gruendl, R. A.
name: Gschwend, J.
name: Gupta, N.
name: Gutierrez, G.
name: de Haan, T.
name: Halverson, N. W.
name: Harrington, N.
name: Henning, J. W.
name: Hilton, G. C.
name: Hollowood, D. L.
name: Holzapfel, W. L.
name: Honscheid, K.
name: Hrubes, J. D.
name: Huang, N.
name: Hubmayr, J.
name: Irwin, K. D.
name: Jeltema, T.
name: Kind, M. Carrasco
name: Knox, L.
name: Kuropatkin, N.
name: Lahav, O.
name: Lee, A. T.
name: Li, D.
name: Lima, M.
name: Lowitz, A.
name: Maia, M. A. G.
name: Marshall, J. L.
name: McMahon, J. J.
name: Melchior, P.
name: Menanteau, F.
name: Meyer, S. S.
name: Miquel, R.
name: Mocanu, L. M.
name: Mohr, J. J.
name: Montgomery, J.
name: Moran, C. Corbett
name: Nadolski, A.
name: Natoli, T.
name: Nibarger, J. P.
name: Noble, G.
name: Novosad, V.
name: Ogando, R. L. C.
name: Padin, S.
name: Plazas, A. A.
name: Pryke, C.
name: Rapetti, D.
name: Romer, A. K.
name: Roodman, A.
name: Rosell, A. Carnero
name: Rozo, E.
name: Ruhl, J. E.
name: Rykoff, E. S.
name: Saliwanchik, B. R.
name: Sanchez, E.
name: Sayre, J. T.
name: Scarpine, V.
name: Schaffer, K. K.
name: Schubnell, M.
name: Serrano, S.
name: Sevilla-Noarbe, I.
name: Sievers, C.
name: Smecher, G.
name: Smith, M.
name: Soares-Santos, M.
name: Stark, A. A.
name: Story, K. T.
name: Suchyta, E.
name: Swanson, M. E. C.
name: Tarle, G.
name: Tucker, C.
name: Vanderlinde, K.
name: Veach, T.
name: De Vicente, J.
name: Vieira, J. D.
name: Vikram, V.
name: Wang, G.
name: Wu, W. L. K.
name: Yefremenko, V.
name: Zhang, Y.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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 $Q/U$ map cutouts along the direction of the locally measured background CMB polarization gradient. Using data from the SPTpol 500 deg$^{2}$ survey at the locations of roughly 18,000 clusters with richness $λ\ge 10$ 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 $(1.43 \pm 0.4)\ \times 10^{14}\ {\rm M_{\odot}}$ 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.
description: 10 pages, 3 figures, 1 table; typos fixed; accepted for publication in PRL