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	A special kind of local structure in the CMB intensity maps: duel peak structure
	Liu, Hao ; Li, Ti-Pei
	2010-10-12 ; 2010-10-12
关键词	cosmic microwave background cosmology: observations methods: data analysis NON-GAUSSIANITY 1ST-YEAR DATA SPHERICAL WAVELETS WMAP DATA Astronomy & Astrophysics
中文摘要	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.
语种	英语 ; 英语
出版者	SCIENCE PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81397]
专题	清华大学
推荐引用方式 GB/T 7714	Liu, Hao,Li, Ti-Pei. A special kind of local structure in the CMB intensity maps: duel peak structure[J],2010, 2010.
APA	Liu, Hao,&Li, Ti-Pei.(2010).A special kind of local structure in the CMB intensity maps: duel peak structure..
MLA	Liu, Hao,et al."A special kind of local structure in the CMB intensity maps: duel peak structure".(2010).

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