New evidence for lack of CMB power on large scales

被引：3
|
作者：
Liu Hao [1 ]
Li TiPei [1 ,2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China
[4] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2010年 / 53卷 / 03期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
cosmology; cosmic microwave background; data analysis; WMAP;
D O I：
10.1007/s11433-010-0146-6
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A digitalized temperature map is recovered from the first light sky survey image published by the Planck team, from which an angular power spectrum of the cosmic microwave background (CMB) is derived. The amplitudes of the low multipoles (low-l) measured from the preliminary Planck power spectrum are significantly lower than those reported by the WMAP team. Possible systematical effects are far from enough to explain the observed low-l differences.
引用
收藏
页码：567 / 570
页数：4
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