The velocity-shape alignment of clusters and the kinetic Sunyaev-Zeldovich effect
文献类型：期刊论文
| 作者 | Cunnama, D.1,3; Faltenbacher, A.2,4; Cress, C.1,3; Passmoor, S.3 |
| 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 |
| ISSN号 | 0035-8711 |
| 关键词 | methods: numerical galaxies: kinematics and dynamics |
| DOI | 10.1111/j.1745-3933.2009.00680.x |
| 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. |
| 资助项目 | South African Centre for High Performance Computing ; National Institute of Theoretical Physics ; Square Kilometer Array Project ; National Research Foundation |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | WILEY-BLACKWELL PUBLISHING, INC |
| WOS记录号 | WOS:000268923100009 |
| 源URL | [http://119.78.100.204/handle/2XEOYT63/11504]  |
| 专题 | 中国科学院计算技术研究所期刊论文_英文 |
| 通讯作者 | Cunnama, D. |
| 作者单位 | 1.Ctr High Performance Comp, Cape Town, South Africa 2.Max Planck Inst Astrophys, D-85741 Garching, Germany 3.Univ Western Cape, Dept Phys, ZA-7535 Bellville, South Africa 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. |
入库方式： OAI收割
来源：计算技术研究所
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