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Resolution of the apparent discrepancy between the number of massive subhaloes in Abell 2744 and Lambda CDM

文献类型：期刊论文

作者Mao, Tian-Xiang2,3; Wang, Jie3; Frenk, Carlos S.1; Gao, Liang3; Li, Ran2,3; Wang, Qiao3; Cao, Xiaoyue2,3; Li, Ming3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2018-07-01
卷号478期号:1页码:L34-L38
关键词dark matter gravitational lensing: strong galaxies: clusters: individual: Abell 2744
ISSN号0035-8711
DOI10.1093/mnrasl/sly069
英文摘要Schwinn et al. have recently compared the abundance and distribution ofmassive substructures identified in a gravitational lensing analysis of Abell 2744 by Jauzac et al. and N-body simulation, and found no cluster in Lambda cold dark matter (Lambda CDM) simulation that is similar to Abell 2744. Schwinn et al. identified the measured projected aperture masses with the actual masses associated with subhaloes in the Millenium XXL N-body simulation. We have used the high-resolution Phoenix cluster simulations to show that such an identification is incorrect: the aperture mass is dominated by mass in the body of the cluster that happens to be projected along the line of sight to the subhalo. This enhancement varies from factors of a few to factors of more than 100, particularly for subhaloes projected near the centre of the cluster. We calculate aperture masses for subhaloes in our simulation and compare them to the measurements for Abell 2744. We find that the data for Abell 2744 are in excellent agreement with the matched predictions from Lambda CDM. We provide further predictions for aperture mass functions of subhaloes in idealized surveys with varying mass detection thresholds.
WOS关键词HUBBLE-FRONTIER-FIELDS ; DARK-MATTER HALOS ; COPERNICUS COMPLEXIO ; SUBSTRUCTURE ; CLUSTER ; GALAXIES ; PROJECT
资助项目973 program[2015CB857005] ; 973 program[2017YFB0203300] ; NSFC[11373029] ; NSFC[11390372] ; NSFC[11851301] ; NSFC[11573030] ; NSFC[11133003] ; NSFC[11425312] ; NSFC[1303033] ; NSFC[11511130054] ; NSFC[11333001] ; Youth Innovation Promotion Association of CAS ; Nebula Talent Program of NAOC ; Newton Mobility award ; Science and Technology Facilities Council[ST/L00075X/1] ; BIS National E-infrastructure capital grant[ST/K00042X/1] ; STFC[ST/H008519/1] ; STFC[ST/K00087X/1] ; STFC DiRAC Operations grant[ST/K003267/1] ; Durham University
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000450777200007
出版者OXFORD UNIV PRESS
资助机构973 program ; 973 program ; NSFC ; NSFC ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Nebula Talent Program of NAOC ; Nebula Talent Program of NAOC ; Newton Mobility award ; Newton Mobility award ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC ; STFC ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; Durham University ; Durham University ; 973 program ; 973 program ; NSFC ; NSFC ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Nebula Talent Program of NAOC ; Nebula Talent Program of NAOC ; Newton Mobility award ; Newton Mobility award ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC ; STFC ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; Durham University ; Durham University ; 973 program ; 973 program ; NSFC ; NSFC ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Nebula Talent Program of NAOC ; Nebula Talent Program of NAOC ; Newton Mobility award ; Newton Mobility award ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC ; STFC ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; Durham University ; Durham University ; 973 program ; 973 program ; NSFC ; NSFC ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Nebula Talent Program of NAOC ; Nebula Talent Program of NAOC ; Newton Mobility award ; Newton Mobility award ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC ; STFC ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; Durham University ; Durham University
源URL[http://ir.bao.ac.cn/handle/114a11/23660]  
专题中国科学院国家天文台
通讯作者Mao, Tian-Xiang
作者单位1.Univ Durham, Inst Computat Cosmol, Dept Phys, South Rd, Durham DH1 3LE, England
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Mao, Tian-Xiang,Wang, Jie,Frenk, Carlos S.,et al. Resolution of the apparent discrepancy between the number of massive subhaloes in Abell 2744 and Lambda CDM[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,478(1):L34-L38.
APA Mao, Tian-Xiang.,Wang, Jie.,Frenk, Carlos S..,Gao, Liang.,Li, Ran.,...&Li, Ming.(2018).Resolution of the apparent discrepancy between the number of massive subhaloes in Abell 2744 and Lambda CDM.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,478(1),L34-L38.
MLA Mao, Tian-Xiang,et al."Resolution of the apparent discrepancy between the number of massive subhaloes in Abell 2744 and Lambda CDM".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 478.1(2018):L34-L38.

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来源：国家天文台

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