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A check on the Cardassian expansion model with type-Ia supernovae data
Cao, L
2003-08-01
Source PublicationCHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
Volume3Issue:4Pages:341-346
AbstractWe 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.
KeywordSupernovae : General Cosmology : Theory Distances And Redshifts
Indexed BySCI
Language英语
WOS IDWOS:000184993900004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8486
Collection星系宇宙学研究部
AffiliationChinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
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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