The velocity-shape alignment of clusters and the kinetic Sunyaev-Zeldovich effect
文献类型：期刊论文
| 作者 | Cunnama, D.1,2; Faltenbacher, A.3,4; Cress, C.1,2; Passmoor, S.1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2009-07-21 |
| 卷号 | 397期号:1页码:L41-L45 |
| 关键词 | methods: numerical galaxies: kinematics and dynamics |
| 英文摘要 | We use the Millennium simulation to probe the correlation between cluster velocities and their shapes and the consequences for measurements of the kinetic Sunyaev-Zeldovich (kSZ) effect. Haloes are generally prolate ellipsoids with orientations that are correlated with those of nearby haloes. We measure the mean streaming velocities of haloes along the lines that separate them, demonstrating that the peculiar velocities and the long axes of haloes tend to be somewhat aligned, especially for the most massive haloes. Since the kSZ effect is proportional to the line-of-sight velocity and the optical depth of the cluster, the alignment results in a strong enhancement of the kSZ signature in clusters moving along the line of sight. This effect has not been taken into account in many analyses of kSZ signatures. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | PECULIAR VELOCITIES ; GALAXY CLUSTERS ; SIMULATIONS ; TELESCOPE ; SPECTRUM ; PLANCK ; LIMITS ; FLOWS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000268923100009 |
| 源URL | [http://119.78.226.72/handle/331011/19551]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Univ Western Cape, Dept Phys, ZA-7535 Bellville, South Africa 2.Ctr High Performance Comp, Cape Town, South Africa 3.Max Planck Inst Astrophys, D-85741 Garching, Germany 4.Shanghai Astron Observ, MPA SHAO Joint Ctr Astrophys Cosmol, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cunnama, D.,Faltenbacher, A.,Cress, C.,et al. The velocity-shape alignment of clusters and the kinetic Sunyaev-Zeldovich effect[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2009,397(1):L41-L45. |
| APA | Cunnama, D.,Faltenbacher, A.,Cress, C.,&Passmoor, S..(2009).The velocity-shape alignment of clusters and the kinetic Sunyaev-Zeldovich effect.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,397(1),L41-L45. |
| MLA | Cunnama, D.,et al."The velocity-shape alignment of clusters and the kinetic Sunyaev-Zeldovich effect".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 397.1(2009):L41-L45. |
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来源：上海天文台
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