Detection of CMB-Cluster Lensing using Polarization Data from SPTpol. Academic Article uri icon


  • 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 500deg^{2} survey at the locations of roughly 18000 clusters with richness 10 from the Dark Energy Survey (DES) Year-3 full galaxy cluster catalog, we detect lensing at 4.8. The mean stacked mass of the selected sample is found to be (1.430.40)10^{14}M_{} 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.

published proceedings

  • Phys Rev Lett

altmetric score

  • 34.91

author list (cited authors)

  • Raghunathan, S., Patil, S., Baxter, E., Benson, B. A., Bleem, L. E., Crawford, T. M., ... SPTpol and DES Collaboration.

citation count

  • 10

complete list of authors

  • Raghunathan, S||Patil, S||Baxter, E||Benson, BA||Bleem, LE||Crawford, TM||Holder, GP||McClintock, T||Reichardt, CL||Varga, TN||Whitehorn, N||Ade, PAR||Allam, S||Anderson, AJ||Austermann, JE||Avila, S||Avva, JS||Bacon, D||Beall, JA||Bender, AN||Bianchini, F||Bocquet, S||Brooks, D||Burke, DL||Carlstrom, JE||Carretero, J||Castander, FJ||Chang, CL||Chiang, HC||Citron, R||Costanzi, M||Crites, AT||da Costa, LN||Desai, S||Diehl, HT||Dietrich, JP||Dobbs, MA||Doel, P||Everett, S||Evrard, AE||Feng, C||Flaugher, B||Fosalba, P||Frieman, J||Gallicchio, J||GarcĂ­a-Bellido, J||Gaztanaga, E||George, EM||Giannantonio, T||Gilbert, A||Gruendl, RA||Gschwend, J||Gupta, N||Gutierrez, G||de Haan, T||Halverson, NW||Harrington, N||Henning, JW||Hilton, GC||Hollowood, DL||Holzapfel, WL||Honscheid, K||Hrubes, JD||Huang, N||Hubmayr, J||Irwin, KD||Jeltema, T||Kind, M Carrasco||Knox, L||Kuropatkin, N||Lahav, O||Lee, AT||Li, D||Lima, M||Lowitz, A||Maia, MAG||Marshall, JL||McMahon, JJ||Melchior, P||Menanteau, F||Meyer, SS||Miquel, R||Mocanu, LM||Mohr, JJ||Montgomery, J||Moran, C Corbett||Nadolski, A||Natoli, T||Nibarger, JP||Noble, G||Novosad, V||Ogando, RLC||Padin, S||Plazas, AA||Pryke, C||Rapetti, D||Romer, AK||Roodman, A||Rosell, A Carnero||Rozo, E||Ruhl, JE||Rykoff, ES||Saliwanchik, BR||Sanchez, E||Sayre, JT||Scarpine, V||Schaffer, KK||Schubnell, M||Serrano, S||Sevilla-Noarbe, I||Sievers, C||Smecher, G||Smith, M||Soares-Santos, M||Stark, AA||Story, KT||Suchyta, E||Swanson, MEC||Tarle, G||Tucker, C||Vanderlinde, K||Veach, T||De Vicente, J||Vieira, JD||Vikram, V||Wang, G||Wu, WLK||Yefremenko, V||Zhang, Y

publication date

  • November 2019