The mass-concentration-redshift relation of cold and warm dark matter haloes

	The mass-concentration-redshift relation of cold and warm dark matter haloes
	Ludlow, Aaron D.1; Bose, Sownak 1; Angulo, Raul E.2; Wang, Lan3 ; Hellwing, Wojciech A.1,4,5; Navarro, Julio F.6; Cole, Shaun 1; Frenk, Carlos S.1
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016-08-01
卷号	460 期号:2 页码:1214-1232
关键词	methods: numerical galaxies: haloes dark matter
英文摘要	We use a suite of cosmological simulations to study the mass-concentration-redshift relation, c(M, z), of dark matter haloes. Our simulations include standard I >-cold dark matter (CDM) models, and additional runs with truncated power spectra, consistent with a thermal warm dark matter (WDM) scenario. We find that the mass profiles of CDM and WDM haloes are self-similar and well approximated by the Einasto profile. The c(M, z) relation of CDM haloes is monotonic: concentrations decrease with increasing virial mass at fixed redshift, and decrease with increasing redshift at fixed mass. The mass accretion histories (MAHs) of CDM haloes are also scale-free, and can be used to infer concentrations directly. These results do not apply to WDM haloes: their MAHs are not scale-free because of the characteristic scale imposed by the power spectrum suppression. Further, the WDM c(M, z) relation is non-monotonic: concentrations peak at a mass scale dictated by the truncation scale, and decrease at higher and lower masses. We show that the assembly history of a halo can still be used to infer its concentration, provided that the total mass of its progenitors is considered (the 'collapsed mass history'; CMH), rather than just that of its main ancestor. This exploits the scale-free nature of CMHs to derive a simple scaling that reproduces the mass-concentration-redshift relation of both CDM and WDM haloes over a vast range of halo masses and redshifts. Our model therefore provides a robust account of the mass, redshift, cosmology and power spectrum dependence of dark matter halo concentrations.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	UNIVERSAL DENSITY PROFILE ; ACCRETION HISTORY ; INNER STRUCTURE ; GALAXY CLUSTERS ; POWER SPECTRUM ; COPERNICUS COMPLEXIO ; ELLIPSOIDAL COLLAPSE ; INITIAL CONDITIONS ; SCALING RELATIONS ; MERGER HISTORIES
收录类别	SCI
语种	英语
WOS记录号	WOS:000379832800005
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6787]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Univ Durham, Dept Phys, Inst Computat Cosmol, South Rd, Durham DH1 3LE, England 2.Ctr Estudios Fis Cosmos Aragon, Plaza San Juan 1,Planta 2, E-44001 Teruel, Spain 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China 4.Univ Portsmouth, Inst Cosmol & Gravitat, Dennis Sciama Bldg, Portsmouth P01 3FX, Hants, England 5.Univ Warsaw, Interdisciplinary Ctr Math & Computat Modelling I, Ul Pawinskiego 5a, PL-02106 Warsaw, Poland 6.Univ Victoria, Dept Phys & Astron, POB 1700 STN CSC, Victoria, BC V8W 2Y2, Canada
推荐引用方式 GB/T 7714	Ludlow, Aaron D.,Bose, Sownak,Angulo, Raul E.,et al. The mass-concentration-redshift relation of cold and warm dark matter haloes[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,460(2):1214-1232.
APA	Ludlow, Aaron D..,Bose, Sownak.,Angulo, Raul E..,Wang, Lan.,Hellwing, Wojciech A..,...&Frenk, Carlos S..(2016).The mass-concentration-redshift relation of cold and warm dark matter haloes.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,460(2),1214-1232.
MLA	Ludlow, Aaron D.,et al."The mass-concentration-redshift relation of cold and warm dark matter haloes".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 460.2(2016):1214-1232.