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题名: TESTING NONSTANDARD COSMOLOGICAL MODELS WITH SNLS3 SUPERNOVA DATA AND OTHER COSMOLOGICAL PROBES
作者: Li, ZX ;  Wu, PX ;  Yu, HW
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2012
卷号: 744, 期号:2, 页码:176
关键词: CHAPLYGIN-GAS MODEL ;  DIGITAL SKY SURVEY ;  HUBBLE-SPACE-TELESCOPE ;  LIGHT-CURVE SHAPES ;  GAMMA-RAY BURSTS ;  IA SUPERNOVAE ;  LEGACY SURVEY ;  DARK ENERGY ;  OBSERVATIONAL CONSTRAINTS ;  CONSTANT
学科分类: Physics
通讯作者: Yu, HW (reprint author), Hunan Normal Univ, Minist Educ, Dept Phys, Changsha 410081, Hunan, Peoples R China.
部门归属: [Li, Zhengxiang; Yu, Hongwei] Hunan Normal Univ, Minist Educ, Dept Phys, Changsha 410081, Hunan, Peoples R China; [Li, Zhengxiang; Yu, Hongwei] Hunan Normal Univ, Minist Educ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Changsha 410081, Hunan, Peoples R China; [Wu, Puxun; Yu, Hongwei] Ningbo Univ, Ctr Nonlinear Sci, Ningbo 315211, Zhejiang, Peoples R China; [Wu, Puxun; Yu, Hongwei] Ningbo Univ, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China; [Wu, Puxun; Yu, Hongwei] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
英文摘要: We investigate the implications for some nonstandard cosmological models using data from the first three years of the Supernova Legacy Survey (SNLS3), assuming a spatially flat universe. A comparison between the constraints from the SNLS3 and those from other SN Ia samples, such as the ESSENCE, Union2, SDSS-II, and Constitution samples, is given and the effects of different light-curve fitters are considered. We find that analyzing SNe Ia with SALT2 or SALT or SiFTO can give consistent results and the tensions between different data sets and different light-curve fitters are obvious for fewer-free-parameters models. At the same time, we also study the constraints from SNLS3 along with data from the cosmic microwave background and the baryonic acoustic oscillations (CMB/BAO), and the latest Hubble parameter versus redshift (H(z)). Using model selection criteria such as chi(2)/dof, goodness of fit, Akaike information criterion, and Bayesian information criterion, we find that, among all the cosmological models considered here (Lambda CDM, constant w, varying w, Dvali-Gabadadze-Porrati (DGP), modified polytropic Cardassian, and the generalized Chaplygin gas), the flat DGP is favored by SNLS3 alone. However, when additional CMB/BAO or H(z) constraints are included, this is no longer the case, and the flat Lambda CDM becomes preferred.
资助者: Hunan Provincial Innovation Foundation For Postgraduate; National Natural Science Foundation of China [10935013, 11175093, 11075083]; Zhejiang Provincial Natural Science Foundation of China [Z6100077, R6110518]; FANEDD [200922]; National Basic Research Program of China [2010CB832803]; NCET [09-0144]; PCSIRT [IRT0964]; Hunan Provincial Natural Science Foundation of China [11JJ7001]; Program for the Key Discipline in Hunan Province
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000298666400095
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15181
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Li, ZX,Wu, PX,Yu, HW. TESTING NONSTANDARD COSMOLOGICAL MODELS WITH SNLS3 SUPERNOVA DATA AND OTHER COSMOLOGICAL PROBES[J]. ASTROPHYSICAL JOURNAL,2012,744(2):176.
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