期刊論文
| 學年 | 97 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2009-04-01 |
| 作品名稱 | Tests of AMiBA Data Integrity |
| 作品名稱（其他語言） | |
| 著者 | Nishioka, Hiroaki; Wang, Fu-cheng; Wu, Jiun-huei Proty; Ho, Paul T. P.; Huang, Chih-wei Locutus; Koch, Patrick M.; Liao, Yu-wei; Lin, Kai-yang; Liu, Guo-chin; Molnar, Sandor M.; Umetsu, Keiichi; Birkinshaw, Mark; Altamirano, Pablo; Chang, Chia-hao; Chang, Shu-hao; Chang, Su-wei; Chen, Ming-tang; Han, Chih-chiang; Huang, Yau-de; Hwang, Yuh-jing; Jiang, Homin; Kesteven, Michael; Kubo, Derek Y.; Li, Chao-te; Martin-Cocher, Pierre; Oshiro, Peter; Raffin, Philippe; Wei, Tashun; Wilson, Warwick |
| 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.1637-1642 |
| 摘要 | We describe methods used to validate data from the Y.T. Lee Array for Microwave Background Anisotropy (AMiBA), an interferometric array designed to measure the Sunyaev-Zel'dovich effect and the anisotropy of the cosmic microwave background. We perform several statistical tests on data from pointed observations of galaxy clusters taken in 2007 and noise data from long-term blank-sky observations and measurements with the feeds covered by the absorbers. We apply power-spectrum analysis, cross-power-spectrum analysis among different outputs with different time lags in our analog correlator, and sample-variance law tests to noise data. We find that (1) there is no time variation of electronic offsets on the timescale of our two-patch observations (~10 minutes); (2) noise is correlated by less than 10% between different lags; and (3) the variance of noise scales with the inverse of time. To test the Gaussianity of the data, we apply Kolmogorov-Smirnov tests to cluster data and find that a 5% significance level efficiently detects data sets with known hardware problems without rejecting an excess of acceptable data. We also calculate third- and fourth-order moments and cumulants for the noise residual visibilities and find that about 95% of our data are within the 99% confidence regions of Gaussianity. |
| 關鍵字 | cosmic microwave background; cosmology: observations; methods: data analysis |
| 語言 | en |
| ISSN | 0004-637X 1538-4357 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | 紙本 電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/50701 ) |