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Probing dynamics of dark energy with latest observations
Zhang, Yue-Cheng1,2; Zhang, Han-Yu1; Wang, Dan-Dan1,2; Qi, Yang-Han3; Wang, Yu-Ting1,4; Zhao, Gong-Bo1,2,4
2017-06-01
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
卷号17期号:6
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.
文章类型Article
关键词Cosmology Dark Energy Large Scale Structure
WOS标题词Science & Technology ; Physical Sciences
资助者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
DOI10.1088/1674-4527/17/6/50
关键词[WOS]COSMOLOGICAL CONSTANT ; CONSTRAINTS ; SUPERNOVA ; SPACE ; UNIVERSE ; SAMPLE
收录类别SCI
语种英语
资助者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
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000408362700002
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/20137
专题星系宇宙学研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Swarthmore Coll, Dept Phys & Astron, Swarthmore, PA 19081 USA
4.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England
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GB/T 7714
Zhang, Yue-Cheng,Zhang, Han-Yu,Wang, Dan-Dan,et al. Probing dynamics of dark energy with latest observations[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(6).
APA Zhang, Yue-Cheng,Zhang, Han-Yu,Wang, Dan-Dan,Qi, Yang-Han,Wang, Yu-Ting,&Zhao, Gong-Bo.(2017).Probing dynamics of dark energy with latest observations.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(6).
MLA Zhang, Yue-Cheng,et al."Probing dynamics of dark energy with latest observations".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.6(2017).
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