Examining the Evidence for Dynamical Dark Energy
文献类型：期刊论文
| 作者 | Zhao, Gong-Bo1,2 ; Crittenden, Robert G.1; Pogosian, Levon1,3; Zhang, Xinmin4,5
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| 刊名 | PHYSICAL REVIEW LETTERS
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| 出版日期 | 2012-10-26 |
| 卷号 | 109期号:17 |
| 英文摘要 | We apply a new nonparametric Bayesian method for reconstructing the evolution history of the equation of state w of dark energy, based on applying a correlated prior for w(z), to a collection of cosmological data. We combine the latest supernova (SNLS 3 year or Union 2.1), cosmic microwave background, redshift space distortion, and the baryonic acoustic oscillation measurements (including BOSS, WiggleZ, and 6dF) and find that the cosmological constant appears consistent with current data, but that a dynamical dark energy model which evolves from w < -1 at z similar to 0.25 to w > -1 at higher redshift is mildly favored. Estimates of the Bayesian evidence show little preference between the cosmological constant model and the dynamical model for a range of correlated prior choices. Looking towards future data, we find that the best fit models for current data could be well distinguished from the Lambda CDM model by observations such as Planck and Euclid-like surveys. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000310261200003 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6214]  |
| 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.Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada 4.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 5.Chinese Acad Sci, TPCSF, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Gong-Bo,Crittenden, Robert G.,Pogosian, Levon,et al. Examining the Evidence for Dynamical Dark Energy[J]. PHYSICAL REVIEW LETTERS,2012,109(17). |
| APA | Zhao, Gong-Bo,Crittenden, Robert G.,Pogosian, Levon,&Zhang, Xinmin.(2012).Examining the Evidence for Dynamical Dark Energy.PHYSICAL REVIEW LETTERS,109(17). |
| MLA | Zhao, Gong-Bo,et al."Examining the Evidence for Dynamical Dark Energy".PHYSICAL REVIEW LETTERS 109.17(2012). |
入库方式： OAI收割
来源：国家天文台
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