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Planck intermediate results: V. Pressure profiles of galaxy clusters from the Sunyaev-Zeldovich effect

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dc.contributor.author Ade P.
dc.contributor.author Aghanim N.
dc.contributor.author Arnaud M.
dc.contributor.author Ashdown M.
dc.contributor.author Atrio-Barandela F.
dc.contributor.author Aumont J.
dc.contributor.author Baccigalupi C.
dc.contributor.author Balbi A.
dc.contributor.author Banday A.
dc.contributor.author Barreiro R.
dc.contributor.author Bartlett J.
dc.contributor.author Battaner E.
dc.contributor.author Benabed K.
dc.contributor.author Benoît A.
dc.contributor.author Bernard J.
dc.contributor.author Bersanelli M.
dc.contributor.author Bhatia R.
dc.contributor.author Bikmaev I.
dc.contributor.author Bobin J.
dc.contributor.author Böhringer H.
dc.contributor.author Bonaldi A.
dc.contributor.author Bond J.
dc.contributor.author Borgani S.
dc.contributor.author Borrill J.
dc.contributor.author Bouchet F.
dc.contributor.author Bourdin H.
dc.contributor.author Brown M.
dc.contributor.author Burenin R.
dc.contributor.author Burigana C.
dc.contributor.author Cabella P.
dc.contributor.author Cardoso J.
dc.contributor.author Carvalho P.
dc.contributor.author Castex G.
dc.contributor.author Catalano A.
dc.contributor.author Cayón L.
dc.contributor.author Chamballu A.
dc.contributor.author Chiang L.
dc.contributor.author Chon G.
dc.contributor.author Christensen P.
dc.contributor.author Churazov E.
dc.contributor.author Clements D.
dc.contributor.author Colafrancesco S.
dc.contributor.author Colombi S.
dc.contributor.author Colombo L.
dc.contributor.author Comis B.
dc.contributor.author Coulais A.
dc.contributor.author Crill B.
dc.contributor.author Cuttaia F.
dc.contributor.author Da Silva A.
dc.contributor.author Dahle H.
dc.contributor.author Danese L.
dc.contributor.author Davis R.
dc.contributor.author De Bernardis P.
dc.contributor.author De Gasperis G.
dc.contributor.author De Zotti G.
dc.contributor.author Delabrouille J.
dc.contributor.author Démoclès J.
dc.contributor.author Désert F.
dc.contributor.author Diego J.
dc.contributor.author Dolag K.
dc.contributor.author Dole H.
dc.contributor.author Donzelli S.
dc.contributor.author Doré O.
dc.contributor.author Dörl U.
dc.contributor.author Douspis M.
dc.contributor.author Dupac X.
dc.contributor.author Efstathiou G.
dc.contributor.author Enßlin T.
dc.contributor.author Eriksen H.
dc.contributor.author Finelli F.
dc.contributor.author Flores-Cacho I.
dc.contributor.author Forni O.
dc.contributor.author Fosalba P.
dc.contributor.author Frailis M.
dc.contributor.author Franceschi E.
dc.date.accessioned 2018-09-18T20:01:42Z
dc.date.available 2018-09-18T20:01:42Z
dc.date.issued 2013
dc.identifier.issn 0004-6361
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/135865
dc.description.abstract Taking advantage of the all-sky coverage and broadfrequency range of the Planck satellite, we study the Sunyaev-Zeldovich (SZ) and pressure profiles of 62 nearby massive clusters detected at high significance in the 14-month nominal survey. Careful reconstruction of the SZ signal indicates that most clusters are individually detected at least out to R500. By stacking the radial profiles, we have statistically detected the radial SZ signal out to 3 × R500, i.e., at a density contrast of about 50-100, though the dispersion about the mean profile dominates the statistical errors across the whole radial range. Our measurement is fully consistent with previous Planck results on integrated SZ fluxes, further strengthening the agreement between SZ and X-ray measurements inside R500. Correcting for the effects of the Planck beam, we have calculated the corresponding pressure profiles. This new constraint from SZ measurements is consistent with the X-ray constraints from XMM-Newton in the region in which the profiles overlap (i.e., [0.1-1] R 500), and is in fairly good agreement with theoretical predictions within the expected dispersion. At larger radii the average pressure profile is slightly flatter than most predictions from numerical simulations. Combining the SZ and X-ray observed profiles into a joint fit to a generalised pressure profile gives best-fit parameters [P0,c500,γ, α,β] = [6.41,1.81,0.31,1.33,4.13]. Using a reasonable hypothesis for the gas temperature in the cluster outskirts we reconstruct from our stacked pressure profile the gas mass fraction profile out to 3 R500. Within the temperature driven uncertainties, our Planck constraints are compatible with the cosmic baryon fraction and expected gas fraction in halos. © 2013 ESO.
dc.relation.ispartofseries Astronomy and Astrophysics
dc.subject Cosmology: observations
dc.subject Galaxies: clusters: general
dc.subject Galaxies: clusters: intracluster medium
dc.subject Submillimeter: general
dc.subject X-rays: general
dc.title Planck intermediate results: V. Pressure profiles of galaxy clusters from the Sunyaev-Zeldovich effect
dc.type Article
dc.relation.ispartofseries-volume 550
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00046361-2013-550-SID84873692585


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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