中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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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