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Probing dynamics of dark energy with latest observations

文献类型：期刊论文

作者Qi, Yang-Han4; Wang, Dan-Dan2,3; Zhang, Han-Yu2; Zhang, Yue-Cheng2,3; Zhao, Gong-Bo1,2,3; Wang, Yu-Ting1,2; Zhang Yuecheng; Zhao Gongbo; Wang Yuting; Wang Dandan
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2017-06-01
卷号17期号:6
关键词Cosmology Dark Energy Large Scale Structure
DOI10.1088/1674-4527/17/6/50
文献子类Article
英文摘要We examine the validity of the Lambda CDM model and probe the dynamics of dark energy with the latest astronomical observations. Using the Om(z) diagnosis, we find that various kinds of observational data are in tension within the Lambda CDM framework. We then allow for dynamics of dark energy and investigate the constraint on dark energy parameters. We find that for two different kinds of parametrisations of the equation of state parameter w, a combination of current data mildly favours an evolving w, although the significance is not sufficient for it to be supported by Bayesian evidence. A forecast of the DESI survey shows that the dynamics of dark energy could be detected at the 7 sigma confidence level and would be decisively supported by Bayesian evidence, if the best-fit model of w derived from current data is the true model.
WOS关键词COSMOLOGICAL CONSTANT ; CONSTRAINTS ; SUPERNOVA ; SPACE ; UNIVERSE ; SAMPLE
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000408362700002
资助机构National Natural Science Foundation of China(11673025) ; National Natural Science Foundation of China(11673025) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Royal Society Newton Advanced Fellowship ; Royal Society Newton Advanced Fellowship ; National Natural Science Foundation of China(11673025) ; National Natural Science Foundation of China(11673025) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Royal Society Newton Advanced Fellowship ; Royal Society Newton Advanced Fellowship
源URL[http://ir.bao.ac.cn/handle/114a11/20137]  
专题国家天文台_星系宇宙学研究部
作者单位1.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Swarthmore Coll, Dept Phys & Astron, Swarthmore, PA 19081 USA
推荐引用方式
GB/T 7714		 Qi, Yang-Han,Wang, Dan-Dan,Zhang, Han-Yu,et al. Probing dynamics of dark energy with latest observations[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(6).
APA Qi, Yang-Han.,Wang, Dan-Dan.,Zhang, Han-Yu.,Zhang, Yue-Cheng.,Zhao, Gong-Bo.,...&Wang Dandan.(2017).Probing dynamics of dark energy with latest observations.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(6).
MLA Qi, Yang-Han,et al."Probing dynamics of dark energy with latest observations".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.6(2017).

入库方式： OAI收割

来源：国家天文台

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