Planck intermediate results

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en 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, 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. 2018-10-16T08:55:53Z 2018-10-16T08:55:53Z 2018-09-01
dc.identifier.citation 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 , 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 . DOI: 10.1051/0004-6361/201731489 en
dc.identifier.issn 0004-6361
dc.identifier.issn 1432-0746
dc.identifier.other PURE UUID: 9eea428b-07ec-4979-ba03-29f68b422dcf
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
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dc.description.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 ((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.format.extent 1-17
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Astronomy and Astrophysics en
dc.relation.ispartofseries Volume 617 en
dc.rights openAccess en
dc.subject.other Astronomy and Astrophysics en
dc.subject.other Space and Planetary Science en
dc.subject.other 114 Physical sciences en
dc.title Planck intermediate results en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Universite Paris-Sud
dc.contributor.department Leiden University
dc.contributor.department University of Cambridge
dc.contributor.department IRAP
dc.contributor.department International School for Advanced Studies
dc.contributor.department University of the Western Cape
dc.contributor.department CNRS Centre National de la Recherche Scientifique
dc.contributor.department Instituto de Física de Cantabria (CSIC-Universidad de Cantabria)
dc.contributor.department Università Degli Studi di Padova
dc.contributor.department Indian Institute of Science Education and Research Thiruvananthapuram
dc.contributor.department University of Manchester
dc.contributor.department Institut d 'Astrophysique de Paris
dc.contributor.department University of Milano
dc.contributor.department University of Toronto
dc.contributor.department Lawrence Berkeley National Laboratory
dc.contributor.department University of Ferrara
dc.contributor.department Cardiff University
dc.contributor.department University of Sussex
dc.contributor.department University of KwaZulu-Natal
dc.contributor.department CNRS/IN2P3
dc.contributor.department University of British Columbia
dc.contributor.department California Institute of Technology
dc.contributor.department CNR-ENEA-EURATOM Association
dc.contributor.department University of Rome La Sapienza
dc.contributor.department INAF - Osservatorio Astronomico di Padova
dc.contributor.department Université Sorbonne Paris Cité
dc.contributor.department Imperial College London
dc.contributor.department European Space Agency - ESA
dc.contributor.department Max-Planck-Institut für Astrophysik
dc.contributor.department University of Oslo
dc.contributor.department PSL Research University
dc.contributor.department African Institute for Mathematical Sciences
dc.contributor.department Osservatorio Astronomico di Trieste
dc.contributor.department Princeton University
dc.contributor.department Jodrell Bank Centre for Astrophysics
dc.contributor.department Department of Applied Physics
dc.subject.keyword Cosmic background radiation
dc.subject.keyword Galaxies: clusters: general
dc.subject.keyword Large-scale structure of Universe
dc.subject.keyword Methods: data analysis
dc.subject.keyword Astronomy and Astrophysics
dc.subject.keyword Space and Planetary Science
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201810165382
dc.identifier.doi 10.1051/0004-6361/201731489
dc.type.version publishedVersion

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