Constraints on the identity of the dark matter from strong gravitational lenses

	Constraints on the identity of the dark matter from strong gravitational lenses
	Li, Ran1 ; Frenk, Carlos S.2; Cole, Shaun 2; Gao, Liang1 ; Bose, Sownak 2; Hellwing, Wojciech A.3,4
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016-07-21
卷号	460 期号:1 页码:363-372
关键词	gravitational lensing: strong methods: statistical galaxies: haloes dark matter
英文摘要	The cold dark matter (CDM) cosmological model unambiguously predicts that a large number of haloes should survive as subhaloes when they are accreted into a larger halo. The CDM model would be ruled out if such substructures were shown not to exist. By contrast, if the dark matter consists of Warm Dark Matter (WDM) particles, then below a threshold mass that depends on the particle mass far fewer substructures would be present. Finding subhaloes below a certain mass would then rule out warm particle masses below some value. Strong gravitational lensing provides a clean method to measure the subhalo mass function through distortions in the structure of Einstein rings and giant arcs. Using mock lensing observations constructed from high-resolution N-body simulations, we show that measurements of approximately 100 strong lens systems with a detection limit of M-low = 10(7) h(-1) M-aS (TM) would clearly distinguish CDM from WDM in the case where this consists of 7 keV sterile neutrinos such as those that might be responsible for the 3.5 keV X-ray emission line recently detected in galaxies and clusters.
收录类别	SCI
语种	英语
WOS记录号	WOS:000379835200027
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5293]
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, Max Planck Inst Astrophys, Key Lab Computat Astrophys,Partner Grp, Beijing 100012, Peoples R China 2.Univ Durham, Dept Phys, Inst Computat Cosmol, South Rd, Durham DH1 3LE, England 3.Univ Portsmouth, Inst Cosmol & Gravitat, Burnaby Rd, Portsmouth PO1 3FX, Hants, England 4.Univ Warsaw, Interdisciplinary Ctr Math & Computat Modelling I, Ul Pawinskiego 5a, Warsaw, Poland
推荐引用方式 GB/T 7714	Li, Ran,Frenk, Carlos S.,Cole, Shaun,et al. Constraints on the identity of the dark matter from strong gravitational lenses[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,460(1):363-372.
APA	Li, Ran,Frenk, Carlos S.,Cole, Shaun,Gao, Liang,Bose, Sownak,&Hellwing, Wojciech A..(2016).Constraints on the identity of the dark matter from strong gravitational lenses.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,460(1),363-372.
MLA	Li, Ran,et al."Constraints on the identity of the dark matter from strong gravitational lenses".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 460.1(2016):363-372.