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 f...
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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Format | Journal Article |
Language | English |
Published |
08.09.2005
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Subjects | |
Online Access | Get full text |
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Summary: | 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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DOI: | 10.48550/arxiv.astro-ph/0509215 |