The giant arc statistics in the three-year Wilkinson Microwave Anisotropy Probe cosmological model
文献类型：期刊论文
| 作者 | Li, G. L.1; Mao, S.2; Jing, Y. P.1; Mo, H. J.3; Gao, L.4; Lin, W. P.1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2006-10-01 |
| 卷号 | 372期号:1页码:L73-L77 |
| 关键词 | gravitational lensing galaxies: clusters: general cosmological parameters dark matter |
| 英文摘要 | We use high-resolution N-body simulations to investigate the optical depth of giant arcs with length-to-width ratios larger than 7.5 and 10 in the 'standard' Lambda cold dark matter (Lambda CDM) model with sigma(8) = 0.9 and Omega(m,0) = 0.3 and a model based on three-year Wilkinson Microwave Anisotropy Probe (WMAP) data. We find that, in dark-matter-only simulations, the lensing probability in the three-year WMAP model (with sigma(8) = 0.74 and Omega(m,0) = 0.238) decreases by a factor of similar to 6 compared with that in the 'standard' Lambda cold dark matter (Lambda CDM) model. The effects of baryonic cooling, star formation and feedbacks are uncertain, but we argue that baryons will only increase the the lensing cross-section by a moderate factor, similar to 2. We conclude that the low central value of sigma(8) and Omega(m,0) preferred by the WMAP three-year data may be too low to be compatible with observations if the conventional assumptions of the background source population are correct. |
| 学科主题 | 星系和宇宙学研究中心 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000207611100017 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/11843]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England 3.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 4.Univ Durham, Dept Phys, Inst Computat Cosmol, Durham DH1 3LE, England |
| 推荐引用方式 GB/T 7714 | Li, G. L.,Mao, S.,Jing, Y. P.,et al. The giant arc statistics in the three-year Wilkinson Microwave Anisotropy Probe cosmological model[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2006,372(1):L73-L77. |
| APA | Li, G. L.,Mao, S.,Jing, Y. P.,Mo, H. J.,Gao, L.,&Lin, W. P..(2006).The giant arc statistics in the three-year Wilkinson Microwave Anisotropy Probe cosmological model.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,372(1),L73-L77. |
| MLA | Li, G. L.,et al."The giant arc statistics in the three-year Wilkinson Microwave Anisotropy Probe cosmological model".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 372.1(2006):L73-L77. |
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来源：上海天文台
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