Skip to main content

Detection of the kinematic Sunyaev-Zel’dovich effect with DES Year 1 and SPT

Author(s): Soergel, B; Flender, S; Story, KT; Bleem, L; Giannantonio, T; et al

To refer to this page use:
Abstract: We detect the kinematic Sunyaev-Zel’dovich (kSZ) effect with a statistical significance of 4.2 sigma by combining a cluster catalogue derived from the first year data of the Dark Energy Survey with cosmic microwave background temperature maps from the South Pole Telescope Sunyaev-Zel’dovich Survey. This measurement is performed with a differential statistic that isolates the pairwise kSZ signal, providing the first detection of the large-scale, pairwise motion of clusters using redshifts derived from photometric data. By fitting the pairwise kSZ signal to a theoretical template, we measure the average central optical depth of the cluster sample, (tau) over bar (e) = (3.75 +/- 0.89) x 10(-3). We compare the extracted signal to realistic simulations and find good agreement with respect to the signal to noise, the constraint on (tau) over bar (e), and the corresponding gas fraction. High-precision measurements of the pairwise kSZ signal with future data will be able to place constraints on the baryonic physics of galaxy clusters, and could be used to probe gravity on scales greater than or similar to 100 Mpc.
Publication Date: 21-Sep-2016
Electronic Publication Date: 17-Jun-2016
Citation: Soergel, B, Flender, S, Story, KT, Bleem, L, Giannantonio, T, Efstathiou, G, Rykoff, E, Benson, BA, Crawford, T, Dodelson, S, Habib, S, Heitmann, K, Holder, G, Jain, B, Rozo, E, Saro, A, Weller, J, Abdalla, FB, Allam, S, Annis, J, Armstrong, R, Benoit-Levy, A, Bernstein, GM, Carlstrom, JE, Carnero Rosell, A, Kind, M Carrasco, Castander, FJ, Chiu, I, Chown, R, Crocce, M, Cunha, CE, D Andrea, CB, da Costa, LN, de Haan, T, Desai, S, Diehl, HT, Dietrich, JP, Doel, P, Estrada, J, Evrard, AE, Flaugher, B, Fosalba, P, Frieman, J, Gaztanaga, E, Gruen, D, Gruendl, RA, Holzapfel, WL, Honscheid, K, James, DJ, Keisler, R, Kuehn, K, Kuropatkin, N, Lahav, O, Lima, M, Marshall, JL, McDonald, M, Melchior, P, Miller, CJ, Miquel, R, Nord, B, Ogando, R, Omori, Y, Plazas, AA, Rapetti, D, Reichardt, CL, Romer, AK, Roodman, A, Saliwanchik, BR, Sanchez, E, Schubnell, M, Sevilla-Noarbe, I, Sheldon, E, Smith, RC, Soares-Santos, M, Sobreira, F, Stark, A, Suchyta, E, Swanson, MEC, Tarle, G, Thomas, D, Vieira, JD, Walker, AR, Whitehorn, N, Collaboration, DES, Collaboration, SPT. (2016). Detection of the kinematic Sunyaev-Zel’dovich effect with DES Year 1 and SPT. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 461 (3172 - 3193. doi:10.1093/mnras/stw1455
DOI: doi:10.1093/mnras/stw1455
ISSN: 0035-8711
EISSN: 1365-2966
Pages: 3172 - 3193
Type of Material: Journal Article
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.