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The haloes of bright satellite galaxies in a warm dark matter universe
文献类型：期刊论文
| 作者 | Lovell, Mark R.1; Eke, Vincent1; Frenk, Carlos S.1; Gao, Liang1,2 ; Jenkins, Adrian1; Theuns, Tom1,3; Wang, Jie1; White, Simon D. M.4; Boyarsky, Alexey5,6; Ruchayskiy, Oleg7
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2012-03-01 |
| 卷号 | 420期号:3页码:2318-2324 |
| 关键词 | galaxies: dwarf dark matter |
| 英文摘要 | High-resolution N-body simulations of galactic cold dark matter haloes indicate that we should expect to find a few satellite galaxies around the Milky Way whose haloes have a maximum circular velocity in excess of 40 km s-1. Yet, with the exception of the Magellanic Clouds and the Sagittarius dwarf, which likely reside in subhaloes with significantly larger velocities than this, the bright satellites of the Milky Way all appear to reside in subhaloes with maximum circular velocities below 40 km s-1. As recently highlighted by Boylan-Kolchin et al., this discrepancy implies that the majority of the most massive subhaloes within a cold dark matter galactic halo are too concentrated to be consistent with the kinematic data for the bright Milky Way satellites. Here we show that no such discrepancy exists if haloes are made of warm rather than cold dark matter because these haloes are less concentrated on account of their typically later formation epochs. Warm dark matter is one of several possible explanations for the observed kinematics of the satellites. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000300702200036 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6296]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Univ Durham, Inst Computat Cosmol, Durham DH1 3LE, England 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Univ Antwerp, Dept Phys, B-2020 Antwerp, Belgium 4.Max Planck Inst Astrophys, D-85740 Garching, Germany 5.FSB ITP LPPC, Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland 6.Bogolyubov Inst Theoret Phys, UA-03680 Kiev, Ukraine 7.CERN Phys Dept, Div Theory, CH-1211 Geneva 23, Switzerland |
| 推荐引用方式 GB/T 7714 | Lovell, Mark R.,Eke, Vincent,Frenk, Carlos S.,et al. The haloes of bright satellite galaxies in a warm dark matter universe[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,420(3):2318-2324. |
| APA | Lovell, Mark R..,Eke, Vincent.,Frenk, Carlos S..,Gao, Liang.,Jenkins, Adrian.,...&Ruchayskiy, Oleg.(2012).The haloes of bright satellite galaxies in a warm dark matter universe.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,420(3),2318-2324. |
| MLA | Lovell, Mark R.,et al."The haloes of bright satellite galaxies in a warm dark matter universe".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 420.3(2012):2318-2324. |
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来源：国家天文台
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