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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/72711


    Title: Contamination of the Central Sunyaev-Zel'dovich Decrements in AMiBA Galaxy Cluster Observations
    Authors: Liu, Guo-Chin;Birkinshaw, Mark;Wu, Jiun-Huei Proty;Ho, Paul T. P.;Huang, Chih-Wei Locutus;Liao, Yu-Wei;Lin, Kai-Yang
    Contributors: 淡江大學物理學系
    Keywords: cosmic background radiation;cosmology: observations;diffuse radiation;galaxies: clusters: general
    Date: 2010-09-01
    Issue Date: 2011-10-24 10:59:30 (UTC+8)
    Publisher: Philadelphia: Institute of Physics Publishing, Inc.
    Abstract: 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.
    Relation: The Astrophysical Journal 720(1), pp.608-613
    DOI: 10.1088/0004-637X/720/1/608
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

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