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A general explanation on the correlation of dark matter halo spin with the large-scale environment
Wang, Peng1,2; Kang, Xi1
2017-06-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume468Issue:1Pages:L123-L127
Corresponding AuthorWang, Peng(wangpeng@pmo.ac.cn) ; Kang, Xi(Kangxi@pmo.ac.cn)
AbstractBoth 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.
Keywordmethods: statistical galaxies: haloes cosmology: theory dark matter large-scale structure of Universe
DOI10.1093/mnrasl/slx038
WOS KeywordCOSMIC WEB ; ANGULAR-MOMENTUM ; GALAXY FORMATION ; FILAMENTS ; ALIGNMENTS ; EVOLUTION ; CLUSTERS ; ORIENTATION ; UNIVERSE ; SHEETS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000410066800026
PublisherOXFORD UNIV PRESS
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22716
Collection中国科学院紫金山天文台
Corresponding AuthorWang, Peng; Kang, Xi
Affiliation1.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
Recommended Citation
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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