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Comparison of Sunyaev-Zel'dovich measurements from Planck and from the Arcminute Microkelvin Imager for 99 galaxy clusters

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dc.contributor.author Perrott Y.
dc.contributor.author Olamaie M.
dc.contributor.author Rumsey C.
dc.contributor.author Brown M.
dc.contributor.author Feroz F.
dc.contributor.author Grainge K.
dc.contributor.author Hobson M.
dc.contributor.author Lasenby A.
dc.contributor.author MacTavish C.
dc.contributor.author Pooley G.
dc.contributor.author Saunders R.
dc.contributor.author Schammel M.
dc.contributor.author Scott P.
dc.contributor.author Shimwell T.
dc.contributor.author Titterington D.
dc.contributor.author Waldram E.
dc.contributor.author Aghanim N.
dc.contributor.author Arnaud M.
dc.contributor.author Ashdown M.
dc.contributor.author Aussel H.
dc.contributor.author Barrena R.
dc.contributor.author Bikmaev I.
dc.contributor.author Böhringer H.
dc.contributor.author Burenin R.
dc.contributor.author Carvalho P.
dc.contributor.author Chon G.
dc.contributor.author Comis B.
dc.contributor.author Dahle H.
dc.contributor.author Democles J.
dc.contributor.author Douspis M.
dc.contributor.author Harrison D.
dc.contributor.author Hempel A.
dc.contributor.author Hurier G.
dc.contributor.author Khamitov I.
dc.contributor.author Kneissl R.
dc.contributor.author MacÍas-Pérez J.
dc.contributor.author Melin J.
dc.contributor.author Pointecouteau E.
dc.contributor.author Pratt G.
dc.contributor.author Rubiño-Martín J.
dc.contributor.author Stolyarov V.
dc.contributor.author Sutton D.
dc.date.accessioned 2018-09-18T20:01:50Z
dc.date.available 2018-09-18T20:01:50Z
dc.date.issued 2015
dc.identifier.issn 0004-6361
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/135887
dc.description.abstract © 2015 ESO. We present observations and analysis of a sample of 123 galaxy clusters from the 2013 Planck catalogue of Sunyaev-Zel'dovich sources with the Arcminute Microkelvin Imager (AMI), a ground-based radio interferometer. AMI provides an independent measurement with higher angular resolution, 3 arcmin compared to the Planck beams of 5-10 arcmin. The AMI observations thus provide validation of the cluster detections, improved positional estimates, and a consistency check on the fitted size (θ<inf>s</inf>) and flux (Y<inf>tot</inf>) parameters in the generalised Navarro, Frenk and White (GNFW) model. We detect 99 of the clusters. We use the AMI positional estimates to check the positional estimates and error-bars produced by the Planck algorithms PowellSnakes and MMF3. We find that Y<inf>tot</inf> values as measured by AMI are biased downwards with respect to the Planck constraints, especially for high Planck-S/N clusters. We perform simulations to show that this can be explained by deviation from the universal pressure profile shape used to model the clusters. We show that AMI data can constrain the α and β parameters describing the shape of the profile in the GNFW model for individual clusters provided careful attention is paid to the degeneracies between parameters, but one requires information on a wider range of angular scales than are present in AMI data alone to correctly constrain all parameters simultaneously.
dc.relation.ispartofseries Astronomy and Astrophysics
dc.subject Cosmic background radiation
dc.subject Cosmology: observations
dc.subject Galaxies: clusters: general
dc.subject Galaxies: clusters: intracluster medium
dc.subject X-rays: galaxies: clusters
dc.title Comparison of Sunyaev-Zel'dovich measurements from Planck and from the Arcminute Microkelvin Imager for 99 galaxy clusters
dc.type Article
dc.relation.ispartofseries-volume 580
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00046361-2015-580-SID84938946603


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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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