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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28257
Title: Planck intermediate results. LIII. Detection of velocity dispersion from the kinetic Sunyaev-Zeldovich effect
Authors: Planck Collaboration
Aghanim, N.
Akrami, Y.
Ashdown, M.
Aumont, J.
Baccigalupi, C.
Ballardini, M.
Banday, A. J.
Barreiro, R. B.
Bartolo, N.
Basak, S.
Battye, R.
Benabed, K.
Bernard, J. -P.
Bersanelli, M.
Bielewicz, P.
Bond, J. R.
Borrill, J.
Bouchet, F. R.
BURIGANA, CARLO 
Calabrese, E.
Carron, J.
Chiang, H. C.
Comis, B.
Contreras, D.
Crill, B. P.
Curto, A.
CUTTAIA, FRANCESCO 
de Bernardis, P.
De Rosa, A.
de Zotti, G.
Delabrouille, J.
Di Valentino, E.
Dickinson, C.
Diego, J. M.
Doré, O.
Ducout, A.
Dupac, X.
Elsner, F.
Enßlin, T. A.
Eriksen, H. K.
Falgarone, E.
Fantaye, Y.
FINELLI, FABIO 
Forastieri, F.
FRAILIS, Marco 
Fraisse, A. A.
FRANCESCHI, ENRICO 
Frolov, A.
GALEOTTA, Samuele 
Galli, S.
Ganga, K.
Gerbino, M.
Górski, K. M.
GRUPPUSO, ALESSANDRO 
Gudmundsson, J. E.
Handley, W.
Hansen, F. K.
Herranz, D.
Hivon, E.
Huang, Z.
Jaffe, A. H.
Keihänen, E.
Keskitalo, R.
Kiiveri, K.
Kim, J.
Kisner, T. S.
Krachmalnicoff, N.
Kunz, M.
Kurki-Suonio, H.
Lamarre, J. -M.
Lasenby, A.
Lattanzi, M.
Lawrence, C. R.
Le Jeune, M.
Levrier, F.
Liguori, M.
Lilje, P. B.
Lindholm, V.
López-Caniego, M.
Lubin, P. M.
Ma, Y. -Z.
Macías-Pérez, J. F.
Maggio, G.
Maino, D.
Mandolesi, N.
Mangilli, A.
Martin, P. G.
Martínez-González, E.
Matarrese, S.
Mauri, N.
McEwen, J. D.
Melchiorri, A.
Mennella, A.
Migliaccio, M.
Miville-Deschênes, M. -A.
Molinari, D.
Moneti, A.
Montier, L.
MORGANTE, GIANLUCA 
Natoli, P.
Oxborrow, C. A.
Pagano, L.
PAOLETTI, DANIELA 
Partridge, B.
Perdereau, O.
Perotto, L.
Pettorino, V.
Piacentini, F.
Plaszczynski, S.
Polastri, L.
Polenta, G.
Rachen, J. P.
Racine, B.
Reinecke, M.
Remazeilles, M.
Renzi, A.
Rocha, G.
Roudier, G.
Ruiz-Granados, B.
SANDRI, MAURA 
Savelainen, M.
Scott, D.
Sirignano, C.
Sirri, G.
Spencer, L. D.
Stanco, L.
Sunyaev, R.
Tauber, J. A.
Tavagnacco, D.
Tenti, M.
Toffolatti, L.
Tomasi, M.
Tristram, M.
Trombetti, T.
Valiviita, J.
Van Tent, F.
Vielva, P.
VILLA, FABRIZIO 
Vittorio, N.
Wandelt, B. D.
Wehus, I. K.
ZACCHEI, Andrea 
Zonca, A.
Issue Date: 2018
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 617
First Page: A48
Abstract: Using the Planck full-mission data, we present a detection of the temperature (and therefore velocity) dispersion due to the kinetic Sunyaev-Zeldovich (kSZ) effect from clusters of galaxies. To suppress the primary CMB and instrumental noise we derive a matched filter and then convolve it with the Planck foreground-cleaned "2D-ILC" maps. By using the Meta Catalogue of X-ray detected Clusters of galaxies (MCXC), we determine the normalized rms dispersion of the temperature fluctuations at the positions of clusters, finding that this shows excess variance compared with the noise expectation. We then build an unbiased statistical estimator of the signal, determining that the normalized mean temperature dispersion of 1526 clusters is <(∆T/T)<SUP>2</SUP> > = (1.64 ± 0.48) × 10<SUP>-11</SUP>. However, comparison with analytic calculations and simulations suggest that around 0.7 σ of this result is due to cluster lensing rather than the kSZ effect. By correcting this, the temperature dispersion is measured to be <(∆T/T)<SUP>2</SUP>> = (1.35 ± 0.48) × 10<SUP>-11</SUP>, which gives a detection at the 2.8 σ level. We further convert uniform-weight temperature dispersion into a measurement of the line-of-sight velocity dispersion, by using estimates of the optical depth of each cluster (which introduces additional uncertainty into the estimate). We find that the velocity dispersion is <υ<SUP>2</SUP>> = (123 000 ± 71 000) (km s<SUP>-1</SUP>)<SUP>2</SUP>, which is consistent with findings from other large-scale structure studies, and provides direct evidence of statistical homogeneity on scales of 600 h<SUP>-1</SUP> Mpc. Our study shows the promise of using cross-correlations of the kSZ effect with large-scale structure in order to constrain the growth of structure.
URI: http://hdl.handle.net/20.500.12386/28257
URL: https://www.aanda.org/articles/aa/abs/2018/09/aa31489-17/aa31489-17.html
https://arxiv.org/pdf/1707.00132.pdf
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201731489
Bibcode ADS: 2018A&A...617A..48P
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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