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Systematic distortion in cosmic microwave background maps
Liu H(刘浩); Li TB(李惕碚); Liu, H; Li, TP
刊名SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY
2009
卷号52期号:5页码:804-808
关键词cosmology cosmic microwave background methods data analysis
学科分类Physics
DOI10.1007/s11433-009-0116-z
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
文章类型Article
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.
类目[WOS]Physics, Multidisciplinary
研究领域[WOS]Physics
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语种英语
WOS记录号WOS:000265734700019
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238523
专题院士_期刊论文
中国科学院高能物理研究所_粒子天体物理中心
作者单位中国科学院高能物理研究所
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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.
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