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A measurement of CMB cluster lensing with SPT and DES year 1 data

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posted on 2023-06-09, 12:43 authored by E J Baxter, S Raghunathan, T M Crawford, P Fosalba, Z Hou, G P Holder, Y Omori, S Patil, E Rozo, T M C Abbott, J Annis, K Aylor, A Benoit-Lévy, B A Benson, E Bertin, L Bleem, E Buckley-Geer, D L Burke, J Carlstrom, A Carnero Rosell, M Carrasco Kind, J Carretero, C L Chang, H-M Cho, A T Crites, M Crocce, C E Cunha, L N da Costa, C B D'Andrea, C Davis, T de Haan, S Desai, J P Dietrich, M A Dobbs, S Dodelson, P Doel, A Drlica-Wagner, J Estrada, W B Everett, A Fausti Neto, B Flaugher, J Frieman, J García-Bellido, E M George, E Gaztanaga, T Giannantonio, D Gruen, R A Gruendl, J Gschwend, G Gutierrez, N W Halverson, N L Harrington, W G Hartley, W L Holzapfel, K Honscheid, J D Hrubes, B Jain, D J James, M Jarvis, T Jeltema, L Knox, E Krause, K Kuehn, S Kuhlmann, N Kuropatkin, O Lahav, A T Lee, E M Leitch, T S Li, M Lima, D Luong-Van, A Manzotti, M March, D P Marrone, J L Marshall, P Martini, J J McMahon, P Melchior, F Menanteau, S S Meyer, C J Miller, R Miquel, L M Mocanu, J J Mohr, T Natoli, B Nord, R L C Ogando, S Padin, A A Plazas, C Pryke, D Rapetti, C L Reichardt, Kathy RomerKathy Romer, A Roodman, J E Ruhl, E Rykoff, M Sako, E Sanchez, J T Sayre, V Scarpine, K K Schaffer, R Schindler, M Schubnell, I Sevilla-Noarbe, E Shirokoff, M Smith, R C Smith, M Soares-Santos, F Sobreira, Z Staniszewski, A Stark, K Story, E Suchyta, G Tarle, D Thomas, M A Troxel, K Vanderlinde, J D Vieira, A R Walker, R Williamson, Y Zhang, J Zuntz
Clusters of galaxies gravitationally lens the cosmic microwave background (CMB) radiation, resulting in a distinct imprint in the CMB on arcminute scales. Measurement of this effect offers a promising way to constrain the masses of galaxy clusters, particularly those at high redshift. We use CMB maps from the South Pole Telescope Sunyaev–Zel’dovich (SZ) survey to measure the CMB lensing signal around galaxy clusters identified in optical imaging from first year observations of the Dark Energy Survey. The cluster catalogue used in this analysis contains 3697 members with mean redshift of z¯ = 0.45. We detect lensing of the CMB by the galaxy clusters at 8.1s significance. Using the measured lensing signal, we constrain the amplitude of the relation between cluster mass and optical richness to roughly 17 per cent precision, finding good agreement with recent constraints obtained with galaxy lensing. The error budget is dominated by statistical noise but includes significant contributions from systematic biases due to the thermal SZ effect and cluster miscentring.

Funding

University of Sussex Astronomy Consolidated Grant 2017-2020; G2050; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/P000525/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

Publisher

Oxford University Press

Issue

2

Volume

476

Page range

2674-2688

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-04-04

First Open Access (FOA) Date

2018-04-04

First Compliant Deposit (FCD) Date

2018-04-04

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