Skip to Main content Skip to Navigation
Journal articles

Planck intermediate results. XIII. Constraints on peculiar velocities

P.A.R. Ade N. Aghanim M. Arnaud M. Ashdown J. Aumont C. Baccigalupi A. Balbi A. J. Banday R. B. Barreiro E. Battaner K. Benabed A. Benoit-Levy J. -P. Bernard M. Bersanelli P. Bielewicz I. Bikmaev J. Bobin J. J. Bock A. Bonaldi J. R. Bond J. Borrill F. R. Bouchet C. Burigana R. C. Butler P. Cabella J.-F. Cardoso 1 A. Catalano 2 A. Chamballu L. -Y Chiang G. Chon P. R. Christensen D. L. Clements S. Colombi L. P. L. Colombo B. P. Crill F. Cuttaia A. da Silva H. Dahle R. D. Davies R. J. Davis P. de Bernardis G. de Gasperis G. de Zotti J. Delabrouille 1 J. Democles J. M. Diego K. Dolag H. Dole S. Donzelli O. Dore U. Doerl M. Douspis X. Dupac T. A. Ensslin F. Finelli I. Flores-Cacho O. Forni M. Frailis M. Frommert S. Galeotta K. Ganga 3 R. T. Genova-Santos M. Giard G. Giardino J. Gonzalez-Nuevo A. Gregorio A. Gruppuso F. K. Hansen D. Harrison C. Hernandez-Monteagudo D. Herranz S. R. Hildebrandt E. Hivon W. A. Holmes W. Hovest K. M. Huffenberger G. Hurier 2 T. R. Jaffe A. H. Jaffe J. Jasche W. C. Jones M. Juvela E. Keihanen R. Keskitalo I. Khamitov T. S. Kisner J. Knoche M. Kunz H. Kurki-Suonio Guilaine Lagache A. Lahteenmaki J. -M. Lamarre A. Lasenby C. R. Lawrence M. Le Jeune 4 R. Leonardi P. B. Lilje M. Linden-Vornle M. Lopez-Caniego J.F. Macias-Perez 2 D. Maino D. S. Y. Mak N. Mandolesi M. Maris F. Marleau E. Martinez-Gonzalez S. Masi S. Matarrese P. Mazzotta A. Melchiorri J. -B. Melin L. Mendes A. Mennella M. Migliaccio Subhabrata Mitra M. -A. Miville-Deschenes A. Moneti L. Montier G. Morgante D. Mortlock A. Moss D. Munshi J. A. Murphy P. Naselsky F. Nati P. Natoli C. B. Netterfield H. U. Norgaard-Nielsen F. Noviello D. Novikov I. Novikov S. Osborne L. Pagano D. Paoletti O. Perdereau 5 F. Perrotta F. Piacentini M. Piat 3 E. Pierpaoli D. Pietrobon Stéphane Plaszczynski 5 E. Pointecouteau G. Polenta L. Popa T. Poutanen G. W. Pratt S. Prunet J. -L. Puget S. Puisieux J. P. Rachen R. Rebolo M. Reinecke M. Remazeilles 4 C. Renault 2 S. Ricciardi M. Roman 4 J. A. Rubino-Martin B. Rusholme M. Sandri G. Savini D. Scott L. Spencer R. Sunyaev D. Sutton A. -S. Suur-Uski J. -F. Sygnet J. A. Tauber L. Terenzi L. Toffolatti M. Tomasi M. Tristram 5 M. Tucci 5 L. Valenziano J. Valiviita B. van Tent P. Vielva F. Villa N. Vittorio L. A. Wade N. Welikala D. Yvon A. Zacchei J. P. Zibin A. Zonca
1 APC-Gravitation - APC - Gravitation
APC (UMR_7164) - AstroParticule et Cosmologie, AEI - Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut )
3 APC - Cosmologie
APC (UMR_7164) - AstroParticule et Cosmologie
Abstract : Using \Planck\ data combined with the Meta Catalogue of X-ray detected Clusters of galaxies (MCXC), we address the study of peculiar motions by searching for evidence of the kinetic Sunyaev-Zeldovich effect (kSZ). By implementing various filters designed to extract the kSZ generated at the positions of the clusters, we obtain consistent constraints on the radial peculiar velocity average, root mean square (rms), and local bulk flow amplitude at different depths. For the whole cluster sample of average redshift 0.18, the measured average radial peculiar velocity with respect to the cosmic microwave background (CMB) radiation at that redshift, i.e., the kSZ monopole, amounts to $72 \pm 60$\,km\,s$^{-1}$. This constitutes less than 1\,% of the relative Hubble velocity of the cluster sample with respect to our local CMB frame. From a subset of this cluster sample \Planck\ finds the radial peculiar velocity rms to be below 800\,km\,s$^{-1}$ at the 95\,% confidence level, which is around three times the $\Lambda$CDM prediction for the typical cluster radial velocity rms at $z=0.15$. \Planck\ data also set strong constraints on the local bulk flow in volumes centred on the Local Group. There is no detection of bulk flow as measured in any comoving sphere extending to the maximum redshift covered by the cluster sample. A blind search for bulk flows in this sample has an upper limit of 254\,km\,s$^{-1}$ (95\,% confidence level) dominated by CMB confusion and instrumental noise, indicating that the Universe is largely homogeneous on Gpc scales. In this context, in conjunction with supernova observations, \Planck\ is able to rule out a large class of inhomogeneous void models as alternatives to dark energy or modified gravity. The \Planck\ constraints on peculiar velocities and bulk flows are thus consistent with the $\Lambda$CDM scenario.
Complete list of metadata

Cited literature [61 references]  Display  Hide  Download
Contributor : Sabine Starita Connect in order to contact the contributor
Submitted on : Thursday, July 23, 2015 - 12:31:45 PM
Last modification on : Thursday, November 25, 2021 - 3:58:05 PM


Publisher files allowed on an open archive



P.A.R. Ade, N. Aghanim, M. Arnaud, M. Ashdown, J. Aumont, et al.. Planck intermediate results. XIII. Constraints on peculiar velocities. Astronomy and Astrophysics - A&A, EDP Sciences, 2014, 561, pp.A97. ⟨10.1051/0004-6361/201321299⟩. ⟨in2p3-00804209⟩



Les métriques sont temporairement indisponibles