中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Cosmic Mach Number: a sensitive probe for the growth of structure

文献类型:期刊论文

作者Ma, Yin-Zhe1,2; Ostriker, Jeremiah P.1,2,3; Zhao, Gong-Bo4,5
刊名JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期2012-06-01
期号6
关键词cosmic flows power spectrum redshift surveys
英文摘要We investigate the potential power of the Cosmic Mach Number (CMN), which is the ratio between the mean velocity and the velocity dispersion of galaxies as a function of cosmic scales, to constrain cosmologies. We first measure the CMN from 4 catalogs of galaxy peculiar velocity surveys at low redshift (z is an element of [0.002, 0.03]), and use them to contrast cosmological models. Overall, current data is consistent with the WMAP7 Lambda CDM model. We find that the CMN is highly sensitive to the growth of structure on scales k is an element of [0.01, 0.1] h/Mpc in Fourier space. Therefore, modified gravity models, and models with massive neutrinos, in which the structure growth generically deviates from that of the Lambda CDM model in a scale-dependent way, can be well differentiated from the Lambda CDM model by using future CMN data.
收录类别SCI
语种英语
WOS记录号WOS:000306003500026
源URL[http://ir.bao.ac.cn/handle/114a11/6062]  
专题国家天文台_星系宇宙学研究部
作者单位1.Univ Cambridge, Kavli Inst Cosmol, Cambridge CB3 0HA, England
2.Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
3.Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA
4.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England
5.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Ma, Yin-Zhe,Ostriker, Jeremiah P.,Zhao, Gong-Bo. Cosmic Mach Number: a sensitive probe for the growth of structure[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2012(6).
APA Ma, Yin-Zhe,Ostriker, Jeremiah P.,&Zhao, Gong-Bo.(2012).Cosmic Mach Number: a sensitive probe for the growth of structure.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(6).
MLA Ma, Yin-Zhe,et al."Cosmic Mach Number: a sensitive probe for the growth of structure".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .6(2012).

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来源:国家天文台

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