Contamination of the Central Sunyaev-Zel'dovich Decrements in AMiBA Galaxy Cluster Observations

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题名:	Contamination of the Central Sunyaev-Zel'dovich Decrements in AMiBA Galaxy Cluster Observations
作者:	Liu, Guo-Chin;Birkinshaw, Mark;Wu, Jiun-Huei Proty;Ho, Paul T. P.;Huang, Chih-Wei Locutus;Liao, Yu-Wei;Lin, Kai-Yang
贡献者:	淡江大學物理學系
关键词:	cosmic background radiation;cosmology: observations;diffuse radiation;galaxies: clusters: general
日期:	2010-09-01
上传时间:	2011-10-24 10:59:30 (UTC+8)
出版者:	Philadelphia: Institute of Physics Publishing, Inc.
摘要:	We investigate the contamination of the Sunyaev-Zel'dovich (SZ) effect for six galaxy clusters, A1689, A1995, A2142, A2163, A2261, and A2390, observed by the Y. T. Lee Array for Microwave Background Anisotropy in 2007. With the range of baselines used, we find that the largest effect (of order 13%-50% of the central SZ flux density) comes from primary anisotropies in the cosmic microwave background and exceeds the thermal noise in all six cases. Contamination from discrete radio sources is estimated to be at a level of 3%-60% of the central SZ flux density. We use the statistics of these contaminating sources to estimate and correct the errors in the measured SZ effects of these clusters.
關聯:	The Astrophysical Journal 720(1), pp.608-613
DOI:	10.1088/0004-637X/720/1/608
显示于类别:	[物理學系暨研究所] 期刊論文

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