Planck 2013 results. XXI. Power spectrum and high-order statistics of the Planck all-sky Compton parameter map
Articolo
Data di Pubblicazione:
2014
Abstract:
We have constructed the first all-sky map of the thermal
Sunyaev-Zeldovich (tSZ) effect by applying specifically tailored
component separation algorithms to the 100 to 857 GHz frequency channel
maps from the Planck survey. This map shows an obvious galaxy cluster
tSZ signal that is well matched with blindly detected clusters in the
Planck SZ catalogue. To characterize the signal in the tSZ map we have
computed its angular power spectrum. At large angular scales (l <
60), the major foreground contaminant is the diffuse thermal dust
emission. At small angular scales (l > 500) the clustered cosmic
infrared background and residual point sources are the major
contaminants. These foregrounds are carefully modelled and subtracted.
We thus measure the tSZ power spectrum over angular scales 0.17�
≲ theta ≲ 3.0� that were previously unexplored. The
measured tSZ power spectrum is consistent with that expected from the
Planck catalogue of SZ sources, with clear evidence of additional signal
from unresolved clusters and, potentially, diffuse warm baryons.
Marginalized band-powers of the Planck tSZ power spectrum and the
best-fit model are given. The non-Gaussianity of the Compton parameter
map is further characterized by computing its 1D probability
distribution function and its bispectrum. The measured tSZ power
spectrum and high order statistics are used to place constraints on
sigma8.
Sunyaev-Zeldovich (tSZ) effect by applying specifically tailored
component separation algorithms to the 100 to 857 GHz frequency channel
maps from the Planck survey. This map shows an obvious galaxy cluster
tSZ signal that is well matched with blindly detected clusters in the
Planck SZ catalogue. To characterize the signal in the tSZ map we have
computed its angular power spectrum. At large angular scales (l <
60), the major foreground contaminant is the diffuse thermal dust
emission. At small angular scales (l > 500) the clustered cosmic
infrared background and residual point sources are the major
contaminants. These foregrounds are carefully modelled and subtracted.
We thus measure the tSZ power spectrum over angular scales 0.17�
≲ theta ≲ 3.0� that were previously unexplored. The
measured tSZ power spectrum is consistent with that expected from the
Planck catalogue of SZ sources, with clear evidence of additional signal
from unresolved clusters and, potentially, diffuse warm baryons.
Marginalized band-powers of the Planck tSZ power spectrum and the
best-fit model are given. The non-Gaussianity of the Compton parameter
map is further characterized by computing its 1D probability
distribution function and its bispectrum. The measured tSZ power
spectrum and high order statistics are used to place constraints on
sigma8.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
cosmological parameters; large-scale structure of Universe; galaxies: clusters: general
Elenco autori:
P., Collaboration; P. A., R.; N., Aghanim; C., Armitage Caplan; M., Arnaud; M., Ashdown; F., Atrio Barandela; J., Aumont; C., Baccigalupi; A. J., Banday; R. B., Barreiro; J. G., Bartlett; E., Battaner; K., Benabed; A., Beno�t; A., Benoit L�vy; J., Bernard; M., Bersanelli; P., Bielewicz; J., Bobin; J. J., Bock; A., Bonaldi; J. R., Bond; J., Borrill; F. R., Bouchet; M., Bridges; M., Bucher; C., Burigana; R. C., Butler; J., Cardoso; P., Carvalho; A., Catalano; A., Challinor; A., Chamballu; H. C., Chiang; L., Chiang; P. R., Christensen; S., Church; D. L., Clements; S., Colombi; L. P., L.; B., Comis; F., Couchot; A., Coulais; B. P., Crill; A., Curto; F., Cuttaia; A. D., Silva; L., Danese; R. D., Davies; R. J., Davis; P. d., Bernardis; A. d., Rosa; G. d., Zotti; J., Delabrouille; J., Delouis; F., D�sert; C., Dickinson; J. M., Diego; K., Dolag; H., Dole; S., Donzelli; O., Dor�; M., Douspis; X., Dupac; G., Efstathiou; T. A., En�lin; H. K., Eriksen; F., Finelli; I., Flores Cacho; O., Forni; M., Frailis; E., Franceschi; S., Galeotta; K., Ganga; R. T., G�nova Santos; M., Giard; G., Giardino; Y., Giraud H�raud; J., Gonz�lez Nuevo; K. M., G�rski; S., Gratton; A., Gregorio; A., Gruppuso; F. K., Hansen; D., Hanson; D., Harrison; S., Henrot Versill�; C., Hern�ndez Monteagudo; D., Herranz; S. R., Hildebrandt; E., Hivon; M., Hobson; W. A., Holmes; A., Hornstrup; W., Hovest; K. M., Huffenberger; G., Hurier; A. H., Jaffe; T. R., Jaffe; W. C., Jones; M., Juvela; E., Keih�nen; R., Keskitalo; T. S., Kisner; R., Kneissl; J., Knoche; L., Knox; M., Kunz; H., Kurki Suonio; F., Lacasa; G., Lagache; A., L�hteenm�ki; J., Lamarre; A., Lasenby; R. J., Laureijs; C. R., Lawrence; J. P., Leahy; R., Leonardi; Tavares, J. Le�n.; J., Lesgourgues; M., Liguori; P. B., Lilje; M., Linden V�rnle; M., L�pez Caniego; P. M., Lubin; J. F., Mac�as P�rez; B., Maffei; D., Maino; N., Mandolesi; A., Marcos Caballero; M., Maris; D. J., Marshall; P. G., Martin; E., Mart�nez Gonz�lez; S., Masi; M., Massardi; S., Matarrese; F., Matthai; P., Mazzotta; A., Melchiorri; J., Melin; L., Mendes; A., Mennella; M., Migliaccio; S., Mitra; M., Miville Desch�nes; A., Moneti; L., Montier; G., Morgante; D., Mortlock; A., Moss; D., Munshi; P., Naselsky; F., Nati; P., Natoli; C. B., Netterfield; H. U., N�rgaard Nielsen; F., Noviello; D., Novikov; I., Novikov; S., Osborne; C. A., Oxborrow; F., Paci; L., Pagano; F., Pajot; D., Paoletti; B., Partridge; F., Pasian; G., Patanchon; O., Perdereau; L., Perotto; F., Perrotta; F., Piacentini; M., Piat; E., Pierpaoli; D., Pietrobon; S., Plaszczynski; E., Pointecouteau; G., Polenta; N., Ponthieu; L., Popa; T., Poutanen; G. W., Pratt; G., Pr�zeau; S., Prunet; J., Puget; J. P., Rachen; R., Rebolo; M., Reinecke; M., Remazeilles; C., Renault; S., Ricciardi; T., Riller; I., Ristorcelli; G., Rocha; C., Rosset; M., Rossetti; G., Roudier; Mart�n, J. A. Rubi�o.; B., Rusholme; M., Sandri; D., Santos; G., Savini; D., Scott; M. D., Seiffert; E. P., S.; L. D., Spencer; J., Starck; V., Stolyarov; R., Stompor; R., Sudiwala; R., Sunyaev; F., Sureau; D., Sutton; A., Suur Uski; J., Sygnet; J. A., Tauber; D., Tavagnacco; Terenzi, Luca; L., Toffolatti; M., Tomasi; M., Tristram; M., Tucci; J., Tuovinen; G., Umana; L., Valenziano; J., Valiviita; B. V., Tent; J., Varis; P., Vielva; F., Villa; N., Vittorio; L. A., Wade; B. D., Wandelt; S. D., M.; D., Yvon; A., Zacchei; A., Zonca
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