High-Significance Sunyaev-Zel'dovich Measurement: Abell 1914 Seen With the Arcminute Microkelvin Imager

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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 13.5-18 GHz, 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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Barker, Robert; Biddulph, Phillip; Bly, Dennis; Boysen, Roger; Brown, Anthony; Clementson, Christopher et al. September 13, 2005.

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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 13.5-18 GHz, 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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5 pages

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  • Report No.: SLAC-PUB-11480
  • Grant Number: AC02-76SF00515
  • DOI: 10.2172/878418 | External Link
  • Office of Scientific & Technical Information Report Number: 878418
  • Archival Resource Key: ark:/67531/metadc875867

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  • September 13, 2005

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Aug. 1, 2017, 12:12 p.m.

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Barker, Robert; Biddulph, Phillip; Bly, Dennis; Boysen, Roger; Brown, Anthony; Clementson, Christopher et al. High-Significance Sunyaev-Zel'dovich Measurement: Abell 1914 Seen With the Arcminute Microkelvin Imager, report, September 13, 2005; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc875867/: accessed October 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.