A general explanation on the correlation of dark matter halo spin with the large-scale environment | |
Wang, Peng1,2; Kang, Xi1![]() | |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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2017-06-01 | |
卷号 | 468期号:1页码:L123-L127 |
关键词 | methods: statistical galaxies: haloes cosmology: theory dark matter large-scale structure of Universe |
ISSN号 | 0035-8711 |
DOI | 10.1093/mnrasl/slx038 |
英文摘要 | Both simulations and observations have found that the spin of halo/galaxy is correlated with the large-scale environment, and particularly the spin of halo flips in filament. A consistent picture of halo spin evolution in different environments is still lacked. Using N-body simulation, we find that halo spin with its environment evolves continuously from sheet to cluster, and the flip of halo spin happens both in filament and nodes. The flip in filament can be explained by halo formation time and migrating time when its environment changes from sheet to filament. For low-mass haloes, they form first in sheets and migrate into filaments later, so their mass and spin growth inside filament are lower, and the original spin is still parallel to filament. For high-mass haloes, they migrate into filaments first, and most of their mass and spin growth are obtained in filaments, so the resulted spin is perpendicular to filament. Our results well explain the overall evolution of cosmic web in the cold dark matter model and can be tested using high-redshift data. The scenario can also be tested against alternative models of dark matter, such as warm/hot dark matter, where the structure formation will proceed in a different way. |
WOS关键词 | COSMIC WEB ; ANGULAR-MOMENTUM ; GALAXY FORMATION ; FILAMENTS ; ALIGNMENTS ; EVOLUTION ; CLUSTERS ; ORIENTATION ; UNIVERSE ; SHEETS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000410066800026 |
内容类型 | 期刊论文 |
源URL | [http://libir.pmo.ac.cn/handle/332002/22715] ![]() |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Wang, Peng; Kang, Xi |
作者单位 | 1.Partner Grp MPI Astron, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Grad Sch, 19A,Yuquan Rd, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Peng,Kang, Xi. A general explanation on the correlation of dark matter halo spin with the large-scale environment[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,468(1):L123-L127. |
APA | Wang, Peng,&Kang, Xi.(2017).A general explanation on the correlation of dark matter halo spin with the large-scale environment.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,468(1),L123-L127. |
MLA | Wang, Peng,et al."A general explanation on the correlation of dark matter halo spin with the large-scale environment".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 468.1(2017):L123-L127. |
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