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题名: Low-redshift cosmic baryon fluid on large scales and She-Leveque universal scaling
作者: He, P ;  Liu, JR ;  Feng, LL ;  Shu, CW ;  Fang, LZ
刊名: PHYSICAL REVIEW LETTERS
出版日期: 2006
卷号: 96, 期号:5, 页码:-
关键词: FULLY-DEVELOPED TURBULENCE ;  ALPHA TRANSMITTED FLUX ;  INTERGALACTIC MEDIUM ;  POISSON STATISTICS ;  BURGERS TURBULENCE ;  INTERMITTENCY ;  COSMOLOGY ;  FEATURES ;  FOREST ;  FIELD
学科分类: Physics
通讯作者: He, P , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Univ Sci & Technol China, Ctr Astrophys, Anhua 230026, Peoples R China; Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China; Brown Univ, Div Appl Math, Providence, RI 02912 USA; Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
英文摘要: We investigate the statistical properties of cosmic baryon fluid in the nonlinear regime, which is crucial for understanding the large-scale structure formation of the Universe. With the hydrodynamic simulation sample of the Universe in the cold dark matter model with a cosmological constant, we show that the intermittency of the velocity field of cosmic baryon fluid at redshift z = 0 in the scale range from the Jeans length to about 16 h(-1) Mpc can be extremely well described by She-Leveque's universal scaling formula. The baryon fluid also possesses the following features: (1) for volume weight statistics, the dissipative structures are dominated by sheets, and (2) the relation between the intensities of fluctuations is hierarchical. These results imply that the evolution of highly evolved cosmic baryon fluid is similar to a fully developed turbulence.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000235252200017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/6041
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
He, P,Liu, JR,Feng, LL,et al. Low-redshift cosmic baryon fluid on large scales and She-Leveque universal scaling[J]. PHYSICAL REVIEW LETTERS,2006,96(5):-.
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