Measurement of halo properties with weak lensing shear and flexion

	Measurement of halo properties with weak lensing shear and flexion
	Er, Xinzhong 1; Tereno, Ismael 2; Mao, Shude1,3
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2012-04-01
卷号	421 期号:2 页码:1443-1449
关键词	gravitational lensing: weak galaxies: haloes
英文摘要	We constrain the properties of cluster haloes by performing likelihood analysis using lensing shear and flexion data. We test our analysis using two mock cluster haloes: an isothermal ellipsoid (SIE) model and a more realistic elliptical Navarro-Frenk-White model. For both haloes, we find that flexion is more sensitive to the halo ellipticity than shear. The introduction of flexion information significantly improves the constraints on halo ellipticity, orientation and mass. We also point out that there is a degeneracy between the mass and the ellipticity of SIE models in the lensing signal.
收录类别	SCI
语种	英语
WOS记录号	WOS:000302695600041
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6168]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Lisbon, Ctr Astron & Astrofis, P-1349018 Lisbon, Portugal 3.Univ Manchester, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England
推荐引用方式 GB/T 7714	Er, Xinzhong,Tereno, Ismael,Mao, Shude. Measurement of halo properties with weak lensing shear and flexion[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,421(2):1443-1449.
APA	Er, Xinzhong,Tereno, Ismael,&Mao, Shude.(2012).Measurement of halo properties with weak lensing shear and flexion.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,421(2),1443-1449.
MLA	Er, Xinzhong,et al."Measurement of halo properties with weak lensing shear and flexion".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 421.2(2012):1443-1449.