English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 49983/85139 (59%)
造访人次 : 7793367      在线人数 : 40
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/96179

    作者: 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
    贡献者: 淡江大學物理學系
    关键词: cosmic microwave background;galaxies: clusters: general;instrumentation: interferometers
    日期: 2009-04-01
    上传时间: 2014-03-05 16:19:18 (UTC+8)
    出版者: Philadelphia: Institute of Physics Publishing, Inc.
    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.
    關聯: The Astrophysical Journal 694(2), pp.1629–1636
    DOI: 10.1088/0004-637X/694/2/1629
    显示于类别:[物理學系暨研究所] 期刊論文


    档案 描述 大小格式浏览次数
    0004-637X_694_2_1629.pdf522KbAdobe PDF157检视/开启



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈