Systematic distortion in cosmic microwave background maps
文献类型：期刊论文
| 作者 | Liu H(刘浩) ; Li TB(李惕碚); Liu, H; Li, TP
|
| 刊名 | SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2009 |
| 卷号 | 52期号:5页码:804-808 |
| 关键词 | cosmology cosmic microwave background methods data analysis |
| 通讯作者 | [Liu Hao ; Li Tipei] Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Li Tipei] Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China ; [Liu Hao] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 英文摘要 | To minimize instrumentally the induced systematic errors, cosmic microwave background (CMB) anisotropy experiments measure temperature differences across the sky using pairs of horn antennas, temperature map is recovered from temperature difference obtained in sky survey through a map-making procedure. To inspect and calibrate residual systematic errors in the recovered temperature maps is important as most previous studies of cosmology are based on these maps. By analyzing pixel-ring coupling and latitude dependence of CMB temperatures, we find notable systematic deviation from CMB Gaussianity in released Wilkinson Microwave Anisotropy Probe (WMAP) maps. The detected deviation cannot be explained by the best-fit LCDM cosmological model at a confidence level above 99% and cannot be ignored for a precision cosmology study. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000265734700019 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/238523]  |
| 专题 | 高能物理研究所_院士 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu H,Li TB,Liu, H,et al. Systematic distortion in cosmic microwave background maps[J]. SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,2009,52(5):804-808. |
| APA | 刘浩,李惕碚,Liu, H,&Li, TP.(2009).Systematic distortion in cosmic microwave background maps.SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,52(5),804-808. |
| MLA | 刘浩,et al."Systematic distortion in cosmic microwave background maps".SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY 52.5(2009):804-808. |
入库方式： OAI收割
来源：高能物理研究所
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