We have constructed all-sky y-maps of the thermal Sunyaev-Zeldovich (tSZ) effect by applying specifically tailored component separation algorithms to the 30 to 857 GHz frequency channel maps from the Planck satellite survey. These reconstructed y-maps are delivered as part of the Planck 2015 release. The y-maps are characterised in terms of noise properties and residual foreground contamination, mainly thermal dust emission at large angular scales and CIB and extragalactic point sources at small angular scales. Specific masks are defined to minimize foreground residuals and systematics. Using these masks we compute the y-map angular power spectrum and higher order statistics. From these we conclude that the y-map is dominated by tSZ signal in the multipole range, 20-600. We compare the measured tSZ power spectrum and higher order statistics to various physically motivated models and discuss the implications of our results in terms of cluster physics and cosmology.
Planck 2015 results : XXII : A map of the thermal Sunyaev-Zeldovich effect / N. Aghanim, M. Arnaud, M. Ashdown, J. Aumont, C. Baccigalupi, A.J. Banday, R.B. Barreiro, J.G. Bartlett, N. Bartolo, E. Battaner, R. Battye, K. Benabed, A. Benôıt, A. Benoit Lévy, J.P. Bernard, M. Bersanelli, P. Bielewicz, J.J. Bock, A. Bonaldi, L. Bonavera, J.R. Bond, J. Borrill, F.R. Bouchet, C. Burigana, R.C. Butler, E. Calabrese, J.F. Cardoso, A. Catalano, A. Challinor, H.C. Chiang, P.R. Christensen, E. Churazov, D.L. Clements, L.P.L. Colombo, C. Combet, B. Comis?, A. Coulais, B.P. Crill, A. Curto, F. Cuttaia, L. Danese, R.D. Davies, R.J. Davis, P. de Bernardis, A. de Rosa, G. de Zotti, J. Delabrouille, F.X. Désert, C. Dickinson, J.M. Diego, K. Dolag, H. Dole, S. Donzelli, O. Doré, M. Douspis, A. Ducout, X. Dupac, G. Efstathiou, F. Elsner, T.A. Enßlin, H.K. Eriksen, J. Fergusson, F. Finelli, O. Forni, M. Frailis, A.A. Fraisse, E. Franceschi, A. Frejsel, S. Galeotta, S. Galli, K. Ganga, R.T. Génova Santos, M. Giard, J. Gonz´alez Nuevo, K.M. Górski, A. Gregorio, A. Gruppuso, J.E. Gudmundsson, F.K. Hansen, D.L. Harrison, S. Henrot Versillé, C. Hern´andez Monteagudo, D. Herranz, S.R. Hildebrandt, E. Hivon, W.A. Holmes, A. Hornstrup, K.M. Huffenberger, G. Hurier, A.H. Jaffe, W.C. Jones, M. Juvela, E. Keih¨anen, R. Keskitalo, R. Kneissl, J. Knoche, M. Kunz, H. Kurki Suonio, F. Lacasa, G. Lagache, A. L¨ahteenm¨aki, J.M. Lamarre, A. Lasenby, M. Lattanzi, R. Leonardi, J. Lesgourgues, F. Levrier, M. Liguori, P.B. Lilje, M. Linden Vørnle, M. López Caniego, J.F. Macías Pérez?, B. Maffei, G. Maggio, D. Maino, N. Mandolesi, A. Mangilli, M. Maris, P.G. Martin, E. Martínez Gonz´alez, S. Masi, S. Matarrese, A. Melchiorri, J.B. Melin, M. Migliaccio, M.A. Miville Deschˆenes, A. Moneti, L. Montier, G. Morgante, D. Mortlock, D. Munshi, J.A. Murphy, P. Naselsky, F. Nati, P. Natoli, F. Noviello, D. Novikov, I. Novikov, F. Paci, L. Pagano, F. Pajot, D. Paoletti, F. Pasian, G. Patanchon, O. Perdereau, L. Perotto, V. Pettorino, F. Piacentini, M. Piat, E. Pierpaoli, D. Pietrobon, S. Plaszczynski, E. Pointecouteau, G. Polenta, N. Ponthieu, G.W. Pratt, S. Prunet, J.L. Puget, J.P. Rachen, M. Reinecke, M. Remazeilles, C. Renault, A. Renzi, I. Ristorcelli, G. Rocha, M. Rossetti, G. Roudier, J.A. Rubiño Martín, B. Rusholme, M. Sandri, D. Santos, A. Sauvé, M. Savelainen, G. Savini, D. Scott, L.D. Spencer, V. Stolyarov, R. Stompor, R. Sunyaev, D. Sutton, A.S. Suur Uski, J.F. Sygnet, J.A. Tauber, L. Terenzi, L. Toffolatti, M. Tomasi, D. Tramonte, M. Tristram, M. Tucci, J. Tuovinen, L. Valenziano, J. Valiviita, B. Van Tent, P. Vielva, F. Villa, L.A. Wade, B.D. Wandelt, I.K. Wehus, D. Yvon, A. Zacchei, A. Zonca. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 1432-0746. - 594(2016 Oct 01).
Planck 2015 results : XXII : A map of the thermal Sunyaev-Zeldovich effect
M. Bersanelli;L.P.L. Colombo;D. Maino;M. Tomasi;
2016
Abstract
We have constructed all-sky y-maps of the thermal Sunyaev-Zeldovich (tSZ) effect by applying specifically tailored component separation algorithms to the 30 to 857 GHz frequency channel maps from the Planck satellite survey. These reconstructed y-maps are delivered as part of the Planck 2015 release. The y-maps are characterised in terms of noise properties and residual foreground contamination, mainly thermal dust emission at large angular scales and CIB and extragalactic point sources at small angular scales. Specific masks are defined to minimize foreground residuals and systematics. Using these masks we compute the y-map angular power spectrum and higher order statistics. From these we conclude that the y-map is dominated by tSZ signal in the multipole range, 20-600. We compare the measured tSZ power spectrum and higher order statistics to various physically motivated models and discuss the implications of our results in terms of cluster physics and cosmology.
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