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Dark energy constraints from the cosmic age and supernova
文献类型：期刊论文
| 作者 | Wang, XL; Feng, B; Zhang, XM; Feng, B , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China. |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2005 |
| 卷号 | 607期号:40910页码:35-41 |
| 关键词 | Globular-cluster Messier-4 Flux-averaging Analysis Equation-of-state Cosmological Constant Universe Consequences Distances Sequence Density Matter |
| ISSN号 | 0370-2693 |
| 英文摘要 | Using the low limit of cosmic ages from globular cluster and the white dwarfs: t(0) > 12 Gyr, together with recent new high redshift supernova observations from the HST/GOODS program and previous supernova data, we give a considerable estimation of the equation of state for dark energy, with uniform priors as weak as 0.2 < Omega(m) < 0.4 or 0.1 < Omega(m)h(2) < 0.16. We find cosmic age limit plays a significant role in lowering the upper bound on the variation amplitude of dark energy equation of state. We propose in this Letter a new scenario of dark energy dubbed quintom, which gives rise to the equation of state larger than -1 in the past and less than -1 today, satisfying current observations. In addition we have also considered the implications of recent X-ray gas mass fraction data on dark energy, which favors a negative running of the equation of state. (C) 2004 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000226817500005 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13881]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Feng, B , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang, XL,Feng, B,Zhang, XM,et al. Dark energy constraints from the cosmic age and supernova[J]. PHYSICS LETTERS B,2005,607(40910):35-41. |
| APA | Wang, XL,Feng, B,Zhang, XM,&Feng, B , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China..(2005).Dark energy constraints from the cosmic age and supernova.PHYSICS LETTERS B,607(40910),35-41. |
| MLA | Wang, XL,et al."Dark energy constraints from the cosmic age and supernova".PHYSICS LETTERS B 607.40910(2005):35-41. |
入库方式： OAI收割
来源：理论物理研究所
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