NAOC Open IR  > 星系宇宙学研究部
IslandFAST: A Semi-numerical Tool for Simulating the Late Epoch of Reionization
Xu, Yidong1; Yue, Bin2; Chen, Xuelei1,3,4
2017-08-01
发表期刊ASTROPHYSICAL JOURNAL
卷号844期号:2
摘要We present the algorithm and main results of our semi-numerical simulation, islandFAST, which was developed from 21 cmFAST and designed for the late stage of reionization. The islandFAST simulation predicts the evolution and size distribution of the large-scale underdense neutral regions (neutral islands), and we find that the late Epoch of Reionization proceeds very fast, showing a characteristic scale of the neutral islands at each redshift. Using islandFAST, we compare the impact of two types of absorption systems, i.e., the large-scale underdense neutral islands versus small-scale overdense absorbers, in regulating the reionization process. The neutral islands dominate the morphology of the ionization field, while the small-scale absorbers dominate the mean-free path of ionizing photons, and also delay and prolong the reionization process. With our semi-numerical simulation, the evolution of the ionizing background can be derived self-consistently given a model for the small absorbers. The hydrogen ionization rate of the ionizing background is reduced by an order of magnitude in the presence of dense absorbers.
文章类型Article
关键词Cosmology: Theory Intergalactic Medium Dark Ages Large-scale Structure Of Universe Reionization First Stars
WOS标题词Science & Technology ; Physical Sciences
资助者NSFC key project(11633004 ; NSFC key project(11633004 ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; NSFC(11653003) ; NSFC(11653003) ; CAS Pioneer Hundred Talents (Young Talents) Program ; CAS Pioneer Hundred Talents (Young Talents) Program ; MoST(2012AA121701 ; MoST(2012AA121701 ; CAS Frontier Science Key Project(QYZDJ-SSW-SLH017) ; CAS Frontier Science Key Project(QYZDJ-SSW-SLH017) ; Strategic Priority Research Program(XDB09020301) ; Strategic Priority Research Program(XDB09020301) ; 11303034 ; 11303034 ; 2016YFE0100300) ; 2016YFE0100300) ; 11373030) ; 11373030) ; NSFC key project(11633004 ; NSFC key project(11633004 ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; NSFC(11653003) ; NSFC(11653003) ; CAS Pioneer Hundred Talents (Young Talents) Program ; CAS Pioneer Hundred Talents (Young Talents) Program ; MoST(2012AA121701 ; MoST(2012AA121701 ; CAS Frontier Science Key Project(QYZDJ-SSW-SLH017) ; CAS Frontier Science Key Project(QYZDJ-SSW-SLH017) ; Strategic Priority Research Program(XDB09020301) ; Strategic Priority Research Program(XDB09020301) ; 11303034 ; 11303034 ; 2016YFE0100300) ; 2016YFE0100300) ; 11373030) ; 11373030)
DOI10.3847/1538-4357/aa7b71
关键词[WOS]RADIATIVE-TRANSFER SIMULATIONS ; QUASAR ULAS J1120+0641 ; SMALL-SCALE STRUCTURE ; N-BODY SIMULATIONS ; CM POWER SPECTRUM ; ALPHA FOREST DATA ; COSMIC REIONIZATION ; LY-ALPHA ; ABSORPTION SYSTEMS ; HII-REGIONS
收录类别SCI
语种英语
资助者NSFC key project(11633004 ; NSFC key project(11633004 ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; NSFC(11653003) ; NSFC(11653003) ; CAS Pioneer Hundred Talents (Young Talents) Program ; CAS Pioneer Hundred Talents (Young Talents) Program ; MoST(2012AA121701 ; MoST(2012AA121701 ; CAS Frontier Science Key Project(QYZDJ-SSW-SLH017) ; CAS Frontier Science Key Project(QYZDJ-SSW-SLH017) ; Strategic Priority Research Program(XDB09020301) ; Strategic Priority Research Program(XDB09020301) ; 11303034 ; 11303034 ; 2016YFE0100300) ; 2016YFE0100300) ; 11373030) ; 11373030) ; NSFC key project(11633004 ; NSFC key project(11633004 ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; NSFC(11653003) ; NSFC(11653003) ; CAS Pioneer Hundred Talents (Young Talents) Program ; CAS Pioneer Hundred Talents (Young Talents) Program ; MoST(2012AA121701 ; MoST(2012AA121701 ; CAS Frontier Science Key Project(QYZDJ-SSW-SLH017) ; CAS Frontier Science Key Project(QYZDJ-SSW-SLH017) ; Strategic Priority Research Program(XDB09020301) ; Strategic Priority Research Program(XDB09020301) ; 11303034 ; 11303034 ; 2016YFE0100300) ; 2016YFE0100300) ; 11373030) ; 11373030)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000406476400006
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/20079
专题星系宇宙学研究部
作者单位1.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Xu, Yidong,Yue, Bin,Chen, Xuelei. IslandFAST: A Semi-numerical Tool for Simulating the Late Epoch of Reionization[J]. ASTROPHYSICAL JOURNAL,2017,844(2).
APA Xu, Yidong,Yue, Bin,&Chen, Xuelei.(2017).IslandFAST: A Semi-numerical Tool for Simulating the Late Epoch of Reionization.ASTROPHYSICAL JOURNAL,844(2).
MLA Xu, Yidong,et al."IslandFAST: A Semi-numerical Tool for Simulating the Late Epoch of Reionization".ASTROPHYSICAL JOURNAL 844.2(2017).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Xu, Yidong]的文章
[Yue, Bin]的文章
[Chen, Xuelei]的文章
百度学术
百度学术中相似的文章
[Xu, Yidong]的文章
[Yue, Bin]的文章
[Chen, Xuelei]的文章
必应学术
必应学术中相似的文章
[Xu, Yidong]的文章
[Yue, Bin]的文章
[Chen, Xuelei]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。