Planck intermediate results

dc.contributorAalto Universityen
dc.contributor.authorAghanim, N.
dc.contributor.authorAkrami, Y.
dc.contributor.authorAshdown, M.
dc.contributor.authorAumont, J.
dc.contributor.authorBaccigalupi, C.
dc.contributor.authorBallardini, M.
dc.contributor.authorBanday, A. J.
dc.contributor.authorBarreiro, R. B.
dc.contributor.authorBartolo, N.
dc.contributor.authorBasak, S.
dc.contributor.authorBattye, R.
dc.contributor.authorBenabed, K.
dc.contributor.authorBernard, J. P.
dc.contributor.authorBersanelli, M.
dc.contributor.authorBielewicz, P.
dc.contributor.authorBond, J. R.
dc.contributor.authorBorrill, J.
dc.contributor.authorBouchet, F. R.
dc.contributor.authorBurigana, C.
dc.contributor.authorCalabrese, E.
dc.contributor.authorCarron, J.
dc.contributor.authorChiang, H. C.
dc.contributor.authorComis, B.
dc.contributor.authorContreras, D.
dc.contributor.authorCrill, B. P.
dc.contributor.authorCurto, A.
dc.contributor.authorCuttaia, F.
dc.contributor.authorDe Bernardis, P.
dc.contributor.authorDe Rosa, A.
dc.contributor.authorDe Zotti, G.
dc.contributor.authorDelabrouille, J.
dc.contributor.authorDi Valentino, E.
dc.contributor.authorDickinson, C.
dc.contributor.authorDiego, J. M.
dc.contributor.authorDoré, O.
dc.contributor.authorDucout, A.
dc.contributor.authorDupac, X.
dc.contributor.authorElsner, F.
dc.contributor.authorEnßlin, T. A.
dc.contributor.authorEriksen, H. K.
dc.contributor.authorFalgarone, E.
dc.contributor.authorFantaye, Y.
dc.contributor.authorFinelli, F.
dc.contributor.authorForastieri, F.
dc.contributor.authorFrailis, M.
dc.contributor.authorFraisse, A. A.
dc.contributor.authorFranceschi, E.
dc.contributor.authorKim, J.
dc.contributor.authorMa, Y. Z.
dc.contributor.authorSavelainen, M.
dc.contributor.departmentUniversité Paris-Sud
dc.contributor.departmentLeiden University
dc.contributor.departmentUniversity of Cambridge
dc.contributor.departmentInternational School for Advanced Studies
dc.contributor.departmentUniversity of the Western Cape
dc.contributor.departmentCentre National de la Recherche Scientifique (CNRS)
dc.contributor.departmentUniversidad de Cantabria
dc.contributor.departmentUniversity of Padova
dc.contributor.departmentIndian Institute of Science Education and Research Thiruvananthapuram
dc.contributor.departmentUniversity of Manchester
dc.contributor.departmentInstitut d 'Astrophysique de Paris
dc.contributor.departmentUniversity of Milano
dc.contributor.departmentUniversity of Toronto
dc.contributor.departmentLawrence Berkeley National Laboratory
dc.contributor.departmentUniversity of Ferrara
dc.contributor.departmentCardiff University
dc.contributor.departmentUniversity of Sussex
dc.contributor.departmentUniversity of KwaZulu-Natal
dc.contributor.departmentInstitut national de physique nucléaire et de physique des particules
dc.contributor.departmentUniversity of British Columbia
dc.contributor.departmentCalifornia Institute of Technology
dc.contributor.departmentCNR-ENEA-EURATOM Association
dc.contributor.departmentSapienza University of Rome
dc.contributor.departmentINAF - Osservatorio Astronomico di Padova
dc.contributor.departmentUniversité Sorbonne Paris Cité
dc.contributor.departmentImperial College London
dc.contributor.departmentEuropean Space Agency - ESA
dc.contributor.departmentMax-Planck-Institut für Astrophysik
dc.contributor.departmentUniversity of Oslo
dc.contributor.departmentUniversité PSL
dc.contributor.departmentAfrican Institute for Mathematical Sciences
dc.contributor.departmentOsservatorio Astronomico di Trieste
dc.contributor.departmentPrinceton University
dc.contributor.departmentJodrell Bank Centre for Astrophysics
dc.contributor.departmentDepartment of Applied Physics
dc.description.abstractUsing 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 ((ΔT/T)2) = (1.64 ± 0.48) × 10-11. 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 ((ΔT/T)2) = (1.35 ± 0.48) × 10-11, 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 (υ2) = (123 000 ± 71 000) (km s-1)2, which is consistent with findings from other large-scale structure studies, and provides direct evidence of statistical homogeneity on scales of 600 h-1 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.en
dc.description.versionPeer revieweden
dc.identifier.citationAghanim , 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 , C , Calabrese , E , Carron , J , Chiang , H C , Comis , B , Contreras , D , Crill , B P , Curto , A , Cuttaia , F , 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 , F , Forastieri , F , Frailis , M , Fraisse , A A , Franceschi , E , Kim , J , Ma , Y Z & Savelainen , M 2018 , ' Planck intermediate results : LIII. Detection of velocity dispersion from the kinetic Sunyaev-Zeldovich effect ' , Astronomy and Astrophysics , vol. 617 , A48 , pp. 1-17 .
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dc.relation.ispartofseriesAstronomy and Astrophysicsen
dc.relation.ispartofseriesVolume 617en
dc.subject.keywordCosmic background radiation
dc.subject.keywordGalaxies: clusters: general
dc.subject.keywordLarge-scale structure of Universe
dc.subject.keywordMethods: data analysis
dc.titlePlanck intermediate resultsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi