ITP OpenIR  > 理论物理所科研产出  > SCI论文
Yang, XF; Wang, FY; Chu, Z; Wang, FY (reprint author), Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China.
Searching for a preferred direction with Union2.1 data
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
语种英语
关键词Gamma-ray Bursts Dark-energy Supernova Data Constraints Dependence Anisotropy Universe
摘要A cosmological preferred direction was reported from the Type Ia supernovae data in recent years. We use the Union2.1 data to give a simple classification of such studies for the first time. Because the maximum anisotropic direction is independent of isotropic dark energy models, we adopt two cosmological models (Lambda CDM, wCDM) for the hemisphere comparison analysis and the Lambda cold dark matter (Lambda CDM) model for a dipole-fitting approach. In hemisphere comparison method, the matter density and the equation of state of dark energy are adopted as the diagnostic qualities in the Lambda CDM model and the wCDM model, respectively. In the dipole-fitting approach, we fit the fluctuation of distance modulus. We find that there is a null signal for the hemisphere comparison method, while a preferred direction (b = -14 degrees.3 +/- 10 degrees.1, l = 307.1 degrees +/- 16.2 degrees) for the dipole-fitting method. This result indicates that the dipole fit is more sensitive than the hemisphere comparison method.
2014
ISSN0035-8711
卷号437期号:2页码:1840-1846
学科领域Physics
DOI10.1093/mnras/stt2015
收录类别SCI
项目资助者State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences; National Basic Research Program of China (973 Program) [2014CB845800]; National Natural Science Foundation of China [11373022, 11103007, 11033002] ; State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences; National Basic Research Program of China (973 Program) [2014CB845800]; National Natural Science Foundation of China [11373022, 11103007, 11033002] ; State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences; National Basic Research Program of China (973 Program) [2014CB845800]; National Natural Science Foundation of China [11373022, 11103007, 11033002] ; State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences; National Basic Research Program of China (973 Program) [2014CB845800]; National Natural Science Foundation of China [11373022, 11103007, 11033002]
引用统计
被引频次:26[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/311006/15517
专题理论物理所科研产出_SCI论文
通讯作者Wang, FY (reprint author), Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China.
推荐引用方式
GB/T 7714
Yang, XF,Wang, FY,Chu, Z,et al. Searching for a preferred direction with Union2.1 data[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,437(2):1840-1846.
APA Yang, XF,Wang, FY,Chu, Z,&Wang, FY .(2014).Searching for a preferred direction with Union2.1 data.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,437(2),1840-1846.
MLA Yang, XF,et al."Searching for a preferred direction with Union2.1 data".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 437.2(2014):1840-1846.
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
Searching for a pref(699KB) 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
[Yang, XF]的文章
[Wang, FY]的文章
[Chu, Z]的文章
百度学术
百度学术中相似的文章
[Yang, XF]的文章
[Wang, FY]的文章
[Chu, Z]的文章
必应学术
必应学术中相似的文章
[Yang, XF]的文章
[Wang, FY]的文章
[Chu, Z]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。