The mass-concentration-redshift relation of cold and warm dark matter haloes
文献类型：期刊论文
| 作者 | Ludlow, Aaron D.1; Bose, Sownak1; Angulo, Raul E.2; Wang, Lan3 ; Hellwing, Wojciech A.1,4,5; Navarro, Julio F.6; Cole, Shaun1; Frenk, Carlos S.1
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 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 |
| 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. |
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来源：国家天文台
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