ITP OpenIR  > 理论物理所1978-2010年知识产出
Fitting the constitution type Ia supernova data with the redshift-binned parametrization method
Huang, Qing-Guo; Li, Miao; Li, Xiao-Dong; Wang, Shuang; Huang, QG , Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea
2009
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号80期号:8页码:-
摘要In this work, we explore the cosmological consequences of the recently released Constitution sample of 397 Type Ia supernovae (SNIa). By revisiting the Chevallier-Polarski-Linder (CPL) parametrization, we find that, for fitting the Constitution set alone, the behavior of dark energy (DE) significantly deviates from the cosmological constant Lambda, where the equation of state (EOS) w and the energy density rho(Lambda) of DE will rapidly decrease along with the increase of redshift z. Inspired by this clue, we separate the redshifts into different bins, and discuss the models of a constant w or a constant rho(Lambda) in each bin, respectively. It is found that for fitting the Constitution set alone, w and rho(Lambda) will also rapidly decrease along with the increase of z, which is consistent with the result of CPL model. Moreover, a step function model in which rho(Lambda) rapidly decreases at redshift z similar to 0: 331 presents a significant improvement (Delta chi(2) = -4.361) over the CPL parametrization, and performs better than other DE models. We also plot the error bars of DE density of this model, and find that this model deviates from the cosmological constant Lambda at 68.3% confidence level (CL); this may arise from some biasing systematic errors in the handling of SNIa data, or more interestingly from the nature of DE itself. In addition, for models with same number of redshift bins, a piecewise constant rho(Lambda) model always performs better than a piecewise constant w model; this shows the advantage of using rho(Lambda), instead of w, to probe the variation of DE.
部门归属[Huang, QG] Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea; [Huang, QG; Li, M] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Li, M; Li, XD; Wang, S] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Li, XD] Univ Sci & Technol China, Interdisciplinary Ctr Theoret Study, Hefei 230026, Peoples R China; [Wang, S] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
关键词Anisotropy-probe Observations Dark Energy Constraints Yang-mills Condensate Cosmological Constant Light Curves Model Consequences Quintessence Evolution Equation
学科领域Physics
资助者NSFC[10535060/A050207, 10821504]; Ministry of Science and Technology[2007CB815401] ; NSFC[10535060/A050207, 10821504]; Ministry of Science and Technology[2007CB815401] ; NSFC[10535060/A050207, 10821504]; Ministry of Science and Technology[2007CB815401] ; NSFC[10535060/A050207, 10821504]; Ministry of Science and Technology[2007CB815401]
URL查看原文
收录类别SCI
资助者NSFC[10535060/A050207, 10821504]; Ministry of Science and Technology[2007CB815401] ; NSFC[10535060/A050207, 10821504]; Ministry of Science and Technology[2007CB815401] ; NSFC[10535060/A050207, 10821504]; Ministry of Science and Technology[2007CB815401] ; NSFC[10535060/A050207, 10821504]; Ministry of Science and Technology[2007CB815401]
WOS记录号WOS:000271353700030
引用统计
被引频次:45[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5230
专题理论物理所1978-2010年知识产出
通讯作者Huang, QG , Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea
推荐引用方式
GB/T 7714
Huang, Qing-Guo,Li, Miao,Li, Xiao-Dong,et al. Fitting the constitution type Ia supernova data with the redshift-binned parametrization method[J]. PHYSICAL REVIEW D,2009,80(8):-.
APA Huang, Qing-Guo,Li, Miao,Li, Xiao-Dong,Wang, Shuang,&Huang, QG , Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea.(2009).Fitting the constitution type Ia supernova data with the redshift-binned parametrization method.PHYSICAL REVIEW D,80(8),-.
MLA Huang, Qing-Guo,et al."Fitting the constitution type Ia supernova data with the redshift-binned parametrization method".PHYSICAL REVIEW D 80.8(2009):-.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Fitting the constitu(690KB) 开放获取使用许可请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Huang, Qing-Guo]的文章
[Li, Miao]的文章
[Li, Xiao-Dong]的文章
百度学术
百度学术中相似的文章
[Huang, Qing-Guo]的文章
[Li, Miao]的文章
[Li, Xiao-Dong]的文章
必应学术
必应学术中相似的文章
[Huang, Qing-Guo]的文章
[Li, Miao]的文章
[Li, Xiao-Dong]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。