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A special kind of local structure in the CMB intensity maps: duel peak structure
Liu H(刘浩); Li TB(李惕碚); Liu, H; Li, TP
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2009
卷号9期号:3页码:#REF!
关键词cosmic microwave background cosmology: observations methods: data analysis
学科分类Astronomy & Astrophysics
通讯作者Liu, H (reprint author), Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型Article
英文摘要We study the local structure of Cosmic Microwave Background (CMB) temperature maps released by the Wilkinson Microwave Anisotropy Probe (WMAP) team, and find a new kind of structure, which can be described as follows: a peak (or valley) of average temperature is often followed by a peak of temperature fluctuation that is 4 degrees away. This structure is important for the following reasons: both the well known cold spot detected by Cruz et al. and the hot spot detected by Vielva et al. with the same technology (the third spot in their article) have such structure; more spots that are similar to them can be found on CMB maps and they also tend to be significant cold/hot spots; if we change the 4 degrees characteristic into an artificial one, such as 3 degrees or 5 degrees, there will be less "similar spots", and the temperature peaks or valleys will be less significant. The presented "similar spots" have passed a strict consistency test which requires them to be significant on at least three different CMB temperature maps. We hope that this article could arouse some interest in the relationship of average temperature with temperature fluctuation in local areas; meanwhile, we are also trying to find an explanation for it which might be important to CMB observation and theory.
类目[WOS]Astronomy & Astrophysics
收录类别SCI
WOS记录号WOS:000264845200004
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/227522
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
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GB/T 7714
Liu H,Li TB,Liu, H,et al. A special kind of local structure in the CMB intensity maps: duel peak structure[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2009,9(3):#REF!.
APA 刘浩,李惕碚,Liu, H,&Li, TP.(2009).A special kind of local structure in the CMB intensity maps: duel peak structure.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,9(3),#REF!.
MLA 刘浩,et al."A special kind of local structure in the CMB intensity maps: duel peak structure".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 9.3(2009):#REF!.
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