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    Sunyaev-Zel'dovich observations with AMI of the hottest galaxy clusters detected in the XMM-Newton Cluster Survey

    193847_98660_MNRAS-2013-Shimwell-2920-37_1_.pdf (4.312Mb)
    Access Status
    Open access
    Authors
    Shimwell, T.
    Rodriguez-Gonzalvez, C.
    Feroz, F.
    Franzen, T.
    Grainge, K.
    Hobson, M.
    Hurley-Walker, Natasha
    Lasenby, A.
    Lloyd-Davies, E.
    Olamaie, M.
    Perrott, Y.
    Pooley, G.
    Rumsey, C.
    Romer, A.
    Saunders, R.
    Scaife, A.
    Schammel, M.
    Scott, P.
    Titterington, D.
    Waldram, E.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Shimwell, Timothy W. and Rodrıguez-Gonzalvez, Carmen and Feroz, Farhan and Franzen, Thomas M.O. and Grainge, Keith J.B. and Hobson, Michael P. and Hurley-Walker, Natasha and Lasenby, Anthony N. and Lloyd-Davies, E. J. and Olamaie, Malak and Perrott, Yvette C. and Pooley, Guy G. and Rumsey, Clare and Romer, A. Kathy and Saunders, Richard D.E. and Scaife, Anna M.M. and Schammel, Michel P. and Scott, Paul F. and Titterington, David J. and Waldram, Elizabeth M. 2013. Sunyaev-Zel'dovich observations with AMI of the hottest galaxy clusters detected in the XMM-Newton Cluster Survey. Monthly Notices of the Royal Astronomical Society. 433 (4): pp. 2920-2937.
    Source Title
    Monthly Notices of the Royal Astronomical Society
    DOI
    10.1093/mnras/stt932
    ISSN
    0035-8711
    Remarks

    Copyright © 2013 The Authors. Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.

    URI
    http://hdl.handle.net/20.500.11937/24249
    Collection
    • Curtin Research Publications
    Abstract

    We have obtained deep Sunyaev-Zel'dovich (SZ) observations towards 15 of the hottest XMM Cluster Survey (XCS) clusters that can be observed with the Arcminute Microkelvin Imager (AMI). We use a Bayesian analysis to quantify the significance of our SZ detections. We detect the SZ effect at high significance towards three of the clusters and at lower significance for a further two clusters. Towards the remaining 10 clusters, no clear SZ signal was measured. We derive cluster parameters using the XCS mass estimates as a prior in our Bayesian analysis. For all AMI-detected clusters, we calculate large-scale mass and temperature estimates while for all undetected clusters we determine upper limits on these parameters. We find that the large-scale mean temperatures derived from our AMI SZ measurements (and the upper limits from null detections) are substantially lower than the XCS-based core-temperature estimates. For clusters detected in the SZ, the mean temperature is, on average, a factor of 1.4 lower than temperatures from the XCS. Our upper limits on the cluster temperature of undetected systems are lower than the mean XCS derived temperature.

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