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Title

Planck 2015 results. XXII. A map of the thermal Sunyaev-Zeldovich effect

AuthorsComis, B.; Remazeilles, M.; Barreiro, R. Belén ; Bernard, J. P.; Bonavera, Laura ; Bouchet, F. R.; Curto, Andrés ; Zotti, G. de; Diego, José María ; González-Nuevo, J. ; Hernández-Monteagudo, C.; Herranz, D. ; Levrier, F.; López-Caniego, M. ; Macías-Pérez, J. F.; Martínez-González, Enrique ; Matarrese, S.; Rocha, G.; Rebolo López, Rafael; Toffolatti, L. ; Vielva, P. ; Planck Collaboration
KeywordsLarge-scale structure of universe
Cosmology: observations
Issue Date2016
PublisherEDP Sciences
CitationAstronomy and Astrophysics 594: A22 (2016)
AbstractWe have constructed all-sky Compton parameters maps, 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. These reconstructed y-maps are delivered as part of the Planck 2015 release. The y-maps are characterized in terms of noise properties and residual foreground contamination, mainly thermal dust emission at large angular scales, and cosmic infrared background 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 <ℓ< 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.
DescriptionCosmology (including clusters of galaxies).-- et al.
Publisher version (URL)http://dx.doi.org/10.1051/0004-6361/201525826
URIhttp://hdl.handle.net/10261/140601
DOI10.1051/0004-6361/201525826
Identifiersdoi: 10.1051/0004-6361/201525826
e-issn: 1432-0746
issn: 0004-6361
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