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arXiv · 1103.0947

Further Sunyaev-Zel'dovich observations of two Planck ERCSC clusters with the Arcminute Microkelvin Imager

The AMI Consortium·:·Natasha Hurley-Walker·Michael L. Brown·Matthew L. Davies·Farhan Feroz·Thomas M. O. Franzen·Keith Grainge·Michael P. Hobson·Anthony Lasenby·Malak Olamaie·Guy Pooley·Carmen Rodriguez-Gonzalvez·Richard D. E. Saunders·Michel P. Schammel·Anna M. M. Scaife·Paul F. Scott·Timothy Shimwell·David Titterington·Elizabeth Waldram
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Abstract

We present follow-up observations of two galaxy clusters detected blindly via the Sunyaev-Zel'dovich (SZ) effect and released in the Planck Early Release Compact Source Catalogue. We use the Arcminute Microkelvin Imager, a dual-array 14-18 GHz radio interferometer. After radio source subtraction, we find a SZ decrement of integrated flux density -1.08+/-0.10 mJy toward PLCKESZ G121.11+57.01, and improve the position measurement of the cluster, finding the centre to be RA 12 59 36.4, Dec +60 04 46.8, to an accuracy of 20 arcseconds. The region of PLCKESZ G115.71+17.52 contains strong extended emission, so we are unable to confirm the presence of this cluster via the SZ effect.

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The AMI Consortium, :, Natasha Hurley-Walker, Michael L. Brown, Matthew L. Davies, Farhan Feroz, Thomas M. O. Franzen, Keith Grainge, Michael P. Hobson, Anthony Lasenby, Malak Olamaie, Guy Pooley, Carmen Rodriguez-Gonzalvez, Richard D. E. Saunders, Michel P. Schammel, Anna M. M. Scaife, Paul F. Scott, Timothy Shimwell, David Titterington, Elizabeth Waldram. 2011-03-29. Further Sunyaev-Zel'dovich observations of two Planck ERCSC clusters with the Arcminute Microkelvin Imager. https://doi.org/10.1111/j.1745-3933.2011.01059.x

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