ITP OpenIR  > 理论物理所SCI论文
Exploring the latest Union2 type Ia supernovae dataset by using model-independent parametrization methods
Wang, SA; Li, XD; Li, MA; Wang, SA (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
2011
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号83期号:2页码:23010
摘要We explore the cosmological consequences of the recently released Union2 sample of 557 type Ia supernovae. Combining this latest type Ia supernovae dataset with the cosmic microwave background anisotropy data from the Wilkinson Microwave Anisotropy Probe 7-yr observations and the baryon acoustic oscillation results from the Sloan Digital Sky Survey data release 7, we measure the dark energy density function f(z) equivalent to rho(de)(z)/rho(de)(0) as a free function of redshift. Two model-independent parametrization methods (the binned parametrization and the polynomial interpolation parametrization) are used in this paper. By using the chi(2) statistic and the Bayesian information criterion, we find that the current observational data are still too limited to distinguish which parametrization method is better, and a simple model has the advantage in fitting observational data over a complicated model. Moreover, it is found that all these parametrizations demonstrate that the Union2 dataset is still consistent with a cosmological constant at 1 sigma confidence level. Therefore, the Union2 dataset is different from the Constitution type Ia supernovae dataset, which more favors a dynamical dark energy.
部门归属[Wang, Shuang] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China; [Wang, Shuang; Li, Xiao-Dong; Li, Miao] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Li, Xiao-Dong] Univ Sci & Technol China, Interdisciplinary Ctr Theoret Study, Hefei 230026, Peoples R China; [Li, Miao] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Li, Miao] Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
关键词Baryon Acoustic-oscillations Dark Energy Constraints Yang-mills Condensate Cosmological Constant Light Curves Consequences Quintessence Evolution Equation Universe
学科领域Physics
资助者NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC
URL查看原文
收录类别SCI
语种英语
资助者NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC ; NSFC [10535060/A050207, 10821504]; Ministry of Science and Technology 973 program [2007CB815401]; USTC
WOS记录号WOS:000286802700004
引用统计
被引频次:32[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/311006/14433
专题理论物理所SCI论文
通讯作者Wang, SA (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
推荐引用方式
GB/T 7714
Wang, SA,Li, XD,Li, MA,et al. Exploring the latest Union2 type Ia supernovae dataset by using model-independent parametrization methods[J]. PHYSICAL REVIEW D,2011,83(2):23010.
APA Wang, SA,Li, XD,Li, MA,&Wang, SA .(2011).Exploring the latest Union2 type Ia supernovae dataset by using model-independent parametrization methods.PHYSICAL REVIEW D,83(2),23010.
MLA Wang, SA,et al."Exploring the latest Union2 type Ia supernovae dataset by using model-independent parametrization methods".PHYSICAL REVIEW D 83.2(2011):23010.
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
Exploring the latest(941KB) 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
[Wang, SA]的文章
[Li, XD]的文章
[Li, MA]的文章
百度学术
百度学术中相似的文章
[Wang, SA]的文章
[Li, XD]的文章
[Li, MA]的文章
必应学术
必应学术中相似的文章
[Wang, SA]的文章
[Li, XD]的文章
[Li, MA]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。