High-significance Sunyaev-Zel'dovich measurement: Abell 1914 seen with the Arcminute Microkelvin Imager

AMI Collaboration; R. Barker; P. Biddulph; D. Bly; R. Boysen; A. Brown; C. Clementson; M. Crofts; T. Culverhouse; J. Czeres; R. Dace; R. D'Alessandro; P. Doherty; P. Duffett-Smith; K. Duggan; J. Ely; M. Felvus; W. Flynn; J. Geisbuesch; K. Grainge; W. Grainger; D. Hammet; R. Hills; M. Hobson; C. Holler; R. Jilley; M. Jones; T. Kaneko; R. Kneissl; K. Lancaster; A. Lasenby; P. Marshall; F. Newton; O. Norris; I. Northrop; G. Pooley; V. Quy; R. Saunders; A. Scaife; J. Schofield; P. Scott; C. Shaw; A. Taylor; D. Titterington; M. Velic; E. Waldram; S. West; B. Wood; G. Yassin; J. Zwart

doi:10.1111/j.1745-3933.2006.00151.x

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High-significance Sunyaev-Zel'dovich measurement: Abell 1914 seen with the Arcminute Microkelvin Imager

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Abstract

We report the first detection of a Sunyaev-Zel'dovich (S-Z) decrement with the Arcminute Microkelvin Imager (AMI). We have made commissioning observations towards the cluster A1914 and have measured an integrated flux density of -8.61 mJy in a uv-tapered map with noise level 0.19 mJy/beam. We find that the spectrum of the decrement, measured in the six channels between 13.5-18GHz, is consistent with that expected for a S-Z effect. The sensitivity of the telescope is consistent with the figures used in our simulations of cluster surveys with AMI.

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AMI Collaboration, R. Barker, P. Biddulph, D. Bly, R. Boysen, A. Brown, C. Clementson, M. Crofts, T. Culverhouse, J. Czeres, R. Dace, R. D'Alessandro, P. Doherty, P. Duffett-Smith, K. Duggan, J. Ely, M. Felvus, W. Flynn, J. Geisbuesch, K. Grainge, W. Grainger, D. Hammet, R. Hills, M. Hobson, C. Holler, R. Jilley, M. Jones, T. Kaneko, R. Kneissl, K. Lancaster, A. Lasenby, P. Marshall, F. Newton, O. Norris, I. Northrop, G. Pooley, V. Quy, R. Saunders, A. Scaife, J. Schofield, P. Scott, C. Shaw, A. Taylor, D. Titterington, M. Velic, E. Waldram, S. West, B. Wood, G. Yassin, J. Zwart. 2005-09-08. High-significance Sunyaev-Zel'dovich measurement: Abell 1914 seen with the Arcminute Microkelvin Imager. https://doi.org/10.1111/j.1745-3933.2006.00151.x

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