Constraining the anisotropic expansion of the Universe
文献类型：期刊论文
| 作者 | Cai, RG
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2013 |
| 卷号 | 87期号:12页码:123522 |
| 关键词 | PROBE WMAP OBSERVATIONS HUBBLE DIAGRAM SUPERNOVA COSMOLOGY |
| ISSN号 | 1550-7998 |
| 通讯作者 | Cai, RG (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China. |
| 英文摘要 | We study the possibly existing anisotropy in the accelerating expansion Universe with the Union2 type Ia supernovae data and gamma-ray burst data. We construct a direction-dependent dark energy model and constrain the anisotropy direction and strength of modulation. We find that the maximum anisotropic deviation direction is (l, b) = (126 degrees, 13 degrees) [or, equivalently, (l, b) = (306 degrees, -13 degrees)], and the current anisotropy level is g(0) = 0.030(+0.010)(-0.030) (1 sigma confidence level with Union2 data). Our results do not show strong evidence for the anisotropic dark energy model. We also discuss potential methods that may distinguish the peculiar velocity field from the anisotropic dark energy model. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [10821504, 10975168, 11035008]; Ministry of Science and Technology of China [2010CB833004]; John Templeton Foundation; National Astronomical Observatories of Chinese Academy of Sciences |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevD.87.123522 |
| 语种 | 英语 |
| WOS记录号 | WOS:000320770300001 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15344]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Cai, RG. Constraining the anisotropic expansion of the Universe[J]. PHYSICAL REVIEW D,2013,87(12):123522. |
| APA | Cai, RG.(2013).Constraining the anisotropic expansion of the Universe.PHYSICAL REVIEW D,87(12),123522. |
| MLA | Cai, RG."Constraining the anisotropic expansion of the Universe".PHYSICAL REVIEW D 87.12(2013):123522. |
入库方式： OAI收割
来源：理论物理研究所
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