The velocity-shape alignment of clusters and the kinetic Sunyaev-Zeldovich effect

doi:10.1111/j.1745-3933.2009.00680.x

	The velocity-shape alignment of clusters and the kinetic Sunyaev-Zeldovich effect
	Cunnama, D.1,2; Faltenbacher, A.3,4; Cress, C.1,2; Passmoor, S.1
	2009-07-21
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
卷号	397 期号:1 页码:L41-L45
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.
关键词	methods: numerical galaxies: kinematics and dynamics
DOI	10.1111/j.1745-3933.2009.00680.x
收录类别	SCI
语种	英语
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
WOS类目	Astronomy & Astrophysics
WOS记录号	WOS:000268923100009
出版者	WILEY-BLACKWELL PUBLISHING, INC
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/11505
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.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.