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Low-redshift cosmic baryon fluid on large scales and She-Leveque universal scaling
He, P; Liu, JR; Feng, LL; Shu, CW; Fang, LZ; He, P , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
2006
发表期刊PHYSICAL REVIEW LETTERS
ISSN0031-9007
卷号96期号:5页码:-
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.
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
关键词Fully-developed Turbulence Alpha Transmitted Flux Intergalactic Medium Poisson Statistics Burgers Turbulence Intermittency Cosmology Features Forest Field
学科领域Physics
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收录类别SCI
WOS记录号WOS:000235252200017
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被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/6041
专题理论物理所1978-2010年知识产出
通讯作者He, P , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
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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):-.
APA He, P,Liu, JR,Feng, LL,Shu, CW,Fang, LZ,&He, P , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.(2006).Low-redshift cosmic baryon fluid on large scales and She-Leveque universal scaling.PHYSICAL REVIEW LETTERS,96(5),-.
MLA He, P,et al."Low-redshift cosmic baryon fluid on large scales and She-Leveque universal scaling".PHYSICAL REVIEW LETTERS 96.5(2006):-.
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