教師資料查詢 | 類別: 期刊論文 | 教師: 游智寬 YU CHIH-KUAN (瀏覽個人網頁)

標題:AMiBA: SYSTEM PERFORMANCE
學年97
學期2
出版(發表)日期2009/04/01
作品名稱AMiBA: SYSTEM PERFORMANCE
作品名稱(其他語言)
著者Lin, Kai-Yang; Li, Chao-Te; Ho, Paul T. P.; Huang, Chih-Wei Locutus; Liao, Yu-Wei; Liu, Guo-Chin; Koch, Patrick M.; Molnar, Sandor M.; Nishioka, Hiroaki; Umetsu, Keiichi; Wang, Fu-Cheng; Wu, Jiun-Huei Proty; Kestevan, Michael; Birkinshaw, Mark; Altamirano, Pablo; Chang, Chia-Hao; Chang, Shu-Hao; Chang, Su-Wei; Chen, Ming-Tang; Martin-Cocher, Pierre; Han, Chih-Chiang; Huang, Yau-De; Hwang, Yuh-Jing; Ibañez-Roman, Fabiola; Jiang, Homin; Kubo, Derek Y.; Oshiro, Peter; Raffin, Philippe; Wei, Tashun; Wilson, Warwick; Chen, Ke-Jung; Chiueh, Tzihong
單位淡江大學物理學系
出版者Philadelphia: Institute of Physics Publishing, Inc.
著錄名稱、卷期、頁數The Astrophysical Journal 694(2), pp.1629–1636
摘要The Y.T. Lee Array for Microwave Background Anisotropy started scientific operation in early 2007. This work describes the optimization of the system performance for the measurements of the Sunyaev-Zel'dovich effect for six massive galaxy clusters at redshifts 0.09-0.32. We achieved a point-source sensitivity of 63 ± 7 mJy with the seven 0.6 m dishes in 1 hr of on-source integration in two-patch differencing observations. We measured and compensated for the delays between the antennas of our platform-mounted interferometer. Beam switching was used to cancel instrumental instabilities and ground pick up. Total power and phase stability were good on timescales of hours, and the system was shown to integrate down on equivalent timescales of 300 hr per baseline/correlation, or about 10 hr for the entire array. While the broadband correlator leads to good sensitivity, the small number of lags in the correlator resulted in poorly measured bandpass response. We corrected for this by using external calibrators (Jupiter and Saturn). Using Jupiter as the flux standard, we measured the disk brightness temperature of Saturn to be 149+5 –12 K.
關鍵字cosmic microwave background; galaxies: clusters: general; instrumentation: interferometers
語言英文
ISSN0004-637X;1538-4357
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通訊作者
審稿制度
國別美國
公開徵稿
出版型式紙本;電子版
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