Probing the slope of cluster mass profile with gravitational Einstein rings: application to Abell 1689
文献类型：期刊论文
| 作者 | Tu, H.1,2,3; Limousin, M.4; Fort, B.2; Shu, C. G.1,3; Sygnet, J. F.2; Jullo, E.5,6; Kneib, J. P.6,7; Richard, J.7 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2008-05-21 |
| 卷号 | 386期号:3页码:1169-1178 |
| 关键词 | gravitational lensing galaxies : clusters : general dark matter |
| 英文摘要 | The strong lensing modelling of gravitational 'rings' formed around massive galaxies is sensitive to the amplitude of the external shear and convergence produced by nearby mass condensations. In current wide-field surveys, it is now possible to find out a large number of rings, typically 10 gravitational rings per square degree. We propose here, to systematically study gravitational rings around galaxy clusters to probe the cluster mass profile beyond the cluster strong lensing regions. For cluster of galaxies with multiple arc systems, we show that rings found at various distances from the cluster centre can improve the modelling by constraining the slope of the cluster mass profile. We outline the principle of the method with simple numerical simulations and we apply it to three rings discovered recently in Abell 1689. In particular, the lens modelling of the three rings confirms that the cluster is bimodal, and favours a slope of the mass profile steeper than isothermal at a cluster radius similar to 300 kpc. These results are compared with previous lens modelling of Abell 1689 including weak lensing analysis. Because of the difficulty arising from the complex mass distribution in Abell 1689, we argue that the ring method will be better implemented on simpler and relaxed clusters. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | HUBBLE-SPACE-TELESCOPE ; LENS ACS SURVEY ; EARLY-TYPE GALAXIES ; ZELDOVICH TEMPERATURE DECREMENT ; UNIVERSAL DENSITY PROFILE ; DARK-MATTER HALOES ; X-RAY ; WEAK ; FLEXION ; A1689 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000255464900001 |
| 源URL | [http://119.78.226.72/handle/331011/19523]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Shanghai Normal Univ, Dept Phys, Shanghai 200234, Peoples R China 2.Inst Astrophys, F-75014 Paris, France 3.Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen, Denmark 5.European So Observ, Santiago 19, Chile 6.OAMP, Astrophys Lab, UMR 6110, F-13012 Marseille, France 7.CALTECH, Dept Astron, Pasadena, CA 91125 USA |
| 推荐引用方式 GB/T 7714 | Tu, H.,Limousin, M.,Fort, B.,et al. Probing the slope of cluster mass profile with gravitational Einstein rings: application to Abell 1689[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2008,386(3):1169-1178. |
| APA | Tu, H..,Limousin, M..,Fort, B..,Shu, C. G..,Sygnet, J. F..,...&Richard, J..(2008).Probing the slope of cluster mass profile with gravitational Einstein rings: application to Abell 1689.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,386(3),1169-1178. |
| MLA | Tu, H.,et al."Probing the slope of cluster mass profile with gravitational Einstein rings: application to Abell 1689".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 386.3(2008):1169-1178. |
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