High-Significance Sunyaev-Zel'dovich Measurement: Abell 1914 Seen With the Arcminute Microkelvin Imager
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.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515;
- OSTI ID:
- 878418
- Report Number(s):
- SLAC-PUB-11480; astro-ph/0509215
- Country of Publication:
- United States
- Language:
- English
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