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A check on the Cardassian expansion model with type-Ia supernovae data
Cao, L
2003-08-01
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
卷号3期号:4页码:341-346
摘要We use the magnitude-redshift relation for the type Ia supernova. data compiled by Riess et al. to analyze the Cardassian expansion scenario. This scenario assumes the universe to be flat, matter dominated, and accelerating, but contains no vacuum contribution. The best fitting model parameters are H-0 = 65.3 kms(-1) Mpc(-1), n = 0.35 and Omega(m) = 0.05. When the highest redshift supernova, SN 1997ck, is excluded, H-0 remains the same, but n becomes 0.20 and Omega(m), 0.15, and the matter density remains unreasonably low. Our result shows that this particular scenario is strongly disfavoured by the SNeIa data.
关键词Supernovae : General Cosmology : Theory Distances And Redshifts
收录类别SCI
语种英语
WOS记录号WOS:000184993900004
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8486
专题星系宇宙学研究部
作者单位Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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Cao, L. A check on the Cardassian expansion model with type-Ia supernovae data[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2003,3(4):341-346.
APA Cao, L.(2003).A check on the Cardassian expansion model with type-Ia supernovae data.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,3(4),341-346.
MLA Cao, L."A check on the Cardassian expansion model with type-Ia supernovae data".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 3.4(2003):341-346.
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