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INTERMITTENCE OF THE MAP OF THE KINETIC SUNYAEV-ZEL'DOVICH EFFECT AND TURBULENCE OF THE INTERGALACTIC MEDIUM
Zhu, Weishan1,2; Feng, Long-Long1; Fang, Li-Zhi2
2011-06-10
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume734Issue:1Pages:L14(5pp)
AbstractWe investigate the possibility of detecting the turbulent state of the intergalactic medium (IGM) with the kinetic Sunyaev-Zel'dovich (kSZ) effect. Being sensitive to the divergence-free component of the momentum field of the IGM, the kSZ effect might be used to probe the vorticity of the turbulent IGM. With cosmological hydrodynamical simulation in the concordance Lambda CDM universe, we find that the structure functions of two-dimensional kSZ maps show strong intermittence, and the intermittent exponents follow a law similar to the She-Leveque scaling formula of fully developed turbulence. We also find that the intermittence is weak in the maps of thermal Sunyaev-Zel'dovich (tSZ) effect. Nevertheless, the superposition of the kSZ and tSZ effects still contain significant intermittence. We conclude that the turbulent behavior of the IGM may be revealed by the observation of the SZ effect on angular scales equal to or less than 0.5 arcmin, corresponding to the multipole parameter l >= 2 x 10(4).
KeywordCosmology: Theory Large-scale Structure Of Universe
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/2041-8205/734/1/L14
WOS KeywordFULLY-DEVELOPED TURBULENCE ; MICROWAVE BACKGROUND ANISOTROPIES ; ALPHA TRANSMITTED FLUX ; LOG-POISSON STATISTICS ; NON-GAUSSIANITY ; POWER SPECTRUM ; SIMULATIONS ; REIONIZATION ; ABSORPTION ; PROBE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000293135500014
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/4466
Collection南极天文中心
Affiliation1.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
Recommended Citation
GB/T 7714
Zhu, Weishan,Feng, Long-Long,Fang, Li-Zhi. INTERMITTENCE OF THE MAP OF THE KINETIC SUNYAEV-ZEL'DOVICH EFFECT AND TURBULENCE OF THE INTERGALACTIC MEDIUM[J]. ASTROPHYSICAL JOURNAL LETTERS,2011,734(1):L14(5pp).
APA Zhu, Weishan,Feng, Long-Long,&Fang, Li-Zhi.(2011).INTERMITTENCE OF THE MAP OF THE KINETIC SUNYAEV-ZEL'DOVICH EFFECT AND TURBULENCE OF THE INTERGALACTIC MEDIUM.ASTROPHYSICAL JOURNAL LETTERS,734(1),L14(5pp).
MLA Zhu, Weishan,et al."INTERMITTENCE OF THE MAP OF THE KINETIC SUNYAEV-ZEL'DOVICH EFFECT AND TURBULENCE OF THE INTERGALACTIC MEDIUM".ASTROPHYSICAL JOURNAL LETTERS 734.1(2011):L14(5pp).
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