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Dynamical dark energy in light of the latest observations

文献类型：期刊论文

作者Kitaura, Francisco-Shu13,14; Zhao, Gong-Bo21,22; Raveri, Marco23,24; Pogosian, Levon22,25; Wang, Yuting21,22; Crittenden, Robert G.22; Handley, Will J.1,26; Percival, Will J.22; Beutler, Florian22; Brinkmann, Jonathan2
刊名NATURE ASTRONOMY
出版日期2017-09-01
卷号1期号:9页码:627-632
DOI10.1038/s41550-017-0216-z
文献子类Article
英文摘要A flat Friedmann-Robertson-Walker universe dominated by a cosmological the working model preferred by cosmologists since the discovery of cosmic acceleration(1,2). However, tensions of various degrees of significance are known to be present among existing datasets within the.CDM framework(3-11). In particular, the Lyman-alpha forest measurement of the baryon acoustic oscillations (BAO) by the Baryon Oscillation Spectroscopic Survey(3) prefers a smaller value of the matter density fraction OM than that preferred by cosmic microwave background (CMB). Also, the recently measured value of the Hubble constant, H-0 = 73.24 +/- 1.74 km s(-1) Mpc(-1) (ref. (12)), is 3.4 higher than the 66.93 +/- 0.62 km s(-1) Mpc(-1) inferred from the Planck CMB data(7). In this work, we investigate whether these tensions can be interpreted as evidence for a non-constant dynamical dark energy. Using the Kullback-Leibler divergence(13) to quantify the tension between datasets, we find that the tensions are relieved by an evolving dark energy, with the dynamical dark energy model preferred at a 3.5 sigma significance level based on the improvement in the fit alone. While, at present, the Bayesian evidence for the dynamical dark energy is insufficient to favour it over. CDM, we show that, if the current best-fit dark energy happened to be the true model, it would be decisively detected by the upcoming Dark Energy Spectroscopic Instrument survey(14).
WOS关键词HUBBLE CONSTANT ; EXPANSION RATE ; SPACE ; CONSTRAINTS ; SUPERNOVAE ; GALAXIES ; UNIVERSE ; PLANCK ; SAMPLE
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000415268900002
资助机构National Natural Science Foundation of China (NSFC)(11673025) ; National Natural Science Foundation of China (NSFC)(11673025) ; Royal Society-Newton Advanced Fellowship ; Royal Society-Newton Advanced Fellowship ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; University of Portsmouth ; University of Portsmouth ; US Department of Energy(DE-FG02-13ER41958) ; US Department of Energy(DE-FG02-13ER41958) ; Italian Space Agency (ASI) through the ASI(I/031/10/0) ; Italian Space Agency (ASI) through the ASI(I/031/10/0) ; INFN-INDARK initiative ; INFN-INDARK initiative ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Science and Technology Facilities Council grant(ST/H002774/1) ; Science and Technology Facilities Council grant(ST/H002774/1) ; NSFC(11403034) ; NSFC(11403034) ; National Research Foundation of Korea (NRF) - Korean Ministry of Education, Science and Technology (MoEST)(NRF-SGER 2014055950) ; National Research Foundation of Korea (NRF) - Korean Ministry of Education, Science and Technology (MoEST)(NRF-SGER 2014055950) ; faculty research fund of Sejong University ; faculty research fund of Sejong University ; National Research Foundation of Korea(NRF - 2016R1C1B2016478) ; National Research Foundation of Korea(NRF - 2016R1C1B2016478) ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; University of Arizona ; University of Arizona ; Brazilian Participation Group ; Brazilian Participation Group ; Brookhaven National Laboratory ; Brookhaven National Laboratory ; Carnegie Mellon University ; Carnegie Mellon University ; University of Florida ; University of Florida ; French Participation Group ; French Participation Group ; German Participation Group ; German Participation Group ; Harvard University ; Harvard University ; Instituto de Astrosica de Canarias ; Instituto de Astrosica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; Max Planck Institute for Astrophysics ; Max Planck Institute for Extraterrestrial Physics ; Max Planck Institute for Extraterrestrial Physics ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; Princeton University ; Princeton University ; Spanish Participation Group ; Spanish Participation Group ; University of Tokyo ; University of Tokyo ; University of Utah ; University of Utah ; Vanderbilt University ; Vanderbilt University ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; Yale University ; Yale University ; National Natural Science Foundation of China (NSFC)(11673025) ; National Natural Science Foundation of China (NSFC)(11673025) ; Royal Society-Newton Advanced Fellowship ; Royal Society-Newton Advanced Fellowship ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; University of Portsmouth ; University of Portsmouth ; US Department of Energy(DE-FG02-13ER41958) ; US Department of Energy(DE-FG02-13ER41958) ; Italian Space Agency (ASI) through the ASI(I/031/10/0) ; Italian Space Agency (ASI) through the ASI(I/031/10/0) ; INFN-INDARK initiative ; INFN-INDARK initiative ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Science and Technology Facilities Council grant(ST/H002774/1) ; Science and Technology Facilities Council grant(ST/H002774/1) ; NSFC(11403034) ; NSFC(11403034) ; National Research Foundation of Korea (NRF) - Korean Ministry of Education, Science and Technology (MoEST)(NRF-SGER 2014055950) ; National Research Foundation of Korea (NRF) - Korean Ministry of Education, Science and Technology (MoEST)(NRF-SGER 2014055950) ; faculty research fund of Sejong University ; faculty research fund of Sejong University ; National Research Foundation of Korea(NRF - 2016R1C1B2016478) ; National Research Foundation of Korea(NRF - 2016R1C1B2016478) ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; University of Arizona ; University of Arizona ; Brazilian Participation Group ; Brazilian Participation Group ; Brookhaven National Laboratory ; Brookhaven National Laboratory ; Carnegie Mellon University ; Carnegie Mellon University ; University of Florida ; University of Florida ; French Participation Group ; French Participation Group ; German Participation Group ; German Participation Group ; Harvard University ; Harvard University ; Instituto de Astrosica de Canarias ; Instituto de Astrosica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; Max Planck Institute for Astrophysics ; Max Planck Institute for Extraterrestrial Physics ; Max Planck Institute for Extraterrestrial Physics ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; Princeton University ; Princeton University ; Spanish Participation Group ; Spanish Participation Group ; University of Tokyo ; University of Tokyo ; University of Utah ; University of Utah ; Vanderbilt University ; Vanderbilt University ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; Yale University ; Yale University
源URL[http://ir.bao.ac.cn/handle/114a11/20206]  
专题国家天文台_星系宇宙学研究部
作者单位1.Kavli Inst Cosmol, Madingley Rd, Cambridge CB3 0HA, England
2.Apache Point Observ, POB 59, Sunspot, NM 88349 USA
3.Univ Autonoma Madrid, Inst Fis Teor, UAM, CSIC, E-28049 Madrid, Spain
4.Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany
5.Univ Barcelona, IEEC UB, Inst Ciecies Cosmos ICCUB, Marti i Franques 1, E-08028 Barcelona, Spain
6.Sejong Univ, Dept Astron & Space Sci, Seoul 143747, South Korea
7.Univ Cordoba, Dept Fis, Campus Rabanales,Edificio Albert Einstein, E-14071 Cordoba, Spain
8.Ohio State Univ, Ctr Cosmol & AstroParticle Phys, Columbus, OH 43210 USA
9.Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain
10.Campus Int Excellence UAM CSIC, E-28049 Madrid, Spain
推荐引用方式
GB/T 7714		 Kitaura, Francisco-Shu,Zhao, Gong-Bo,Raveri, Marco,et al. Dynamical dark energy in light of the latest observations[J]. NATURE ASTRONOMY,2017,1(9):627-632.
APA Kitaura, Francisco-Shu.,Zhao, Gong-Bo.,Raveri, Marco.,Pogosian, Levon.,Wang, Yuting.,...&Zhang, Hanyu.(2017).Dynamical dark energy in light of the latest observations.NATURE ASTRONOMY,1(9),627-632.
MLA Kitaura, Francisco-Shu,et al."Dynamical dark energy in light of the latest observations".NATURE ASTRONOMY 1.9(2017):627-632.

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来源：国家天文台

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