NAOC Open IR
Simulating the Galaxy Cluster "El Gordo": Gas Motion, Kinetic Sunyaev-Zel'dovich Signal, and X-Ray Line Features
Zhang, Congyao1,2; Yu, Qingjuan2; Lu, Youjun3,4
2018-03-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume855Issue:1Pages:10
AbstractThe massive galaxy cluster "El Gordo" (ACT-CL J0102-4915) is a rare merging system with a high collision speed suggested by multi-wavelength observations and theoretical modeling. Zhang et al. propose two types of mergers, a nearly head-on merger and an off-axis merger with a large impact parameter, to reproduce most of the observational features of the cluster using numerical simulations. The different merger configurations of the two models result in different gas motion in the simulated clusters. In this paper, we predict the kinetic Sunyaev-Zel'dovich (kSZ) effect, the relativistic correction of the thermal Sunyaev-Zel'dovich (tSZ) effect, and the X-ray spectrum of this cluster, based on the two proposed models. We find that (1) the amplitudes of the kSZ effect resulting from the two models are both on the order of Delta T/T similar to 10(-5); but their morphologies are different, which trace the different line-of-sight velocity distributions of the systems; (2) the relativistic correction of the tSZ effect around 240 GHz can be possibly used to constrain the temperature of the hot electrons heated by the shocks; and (3) the shift between the X-ray spectral lines emitted from different regions of the cluster can be significantly different in the two models. The shift and the line broadening can be up to similar to 25 eV and 50 eV, respectively. We expect that future observations of the kSZ effect and the X-ray spectral lines (e.g., by ALMA, XARM) will provide a strong constraint on the gas motion and the merger configuration of ACT-CL J0102-4915.
Keywordgalaxies: clusters: general galaxies: clusters: individual (ACT-CL J0102-4915) large-scale structure of universe methods: numerical X-rays: galaxies: clusters
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China
DOI10.3847/1538-4357/aaab4c
WOS KeywordRELATIVISTIC CORRECTIONS ; FLOWS ; SHOCK ; CODE
Language英语
Funding ProjectNational Natural Science Foundation of China[11673001] ; National Natural Science Foundation of China[11273004] ; National Natural Science Foundation of China[11373031] ; National Natural Science Foundation of China[11390372] ; National Key R&D Program of China[2016YFA0400703] ; National Key R&D Program of China[2016YFA0400704]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000426709000008
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/37259
Collection中国科学院国家天文台
Corresponding AuthorLu, Youjun
Affiliation1.Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85741 Garching, Germany
2.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Congyao,Yu, Qingjuan,Lu, Youjun. Simulating the Galaxy Cluster "El Gordo": Gas Motion, Kinetic Sunyaev-Zel'dovich Signal, and X-Ray Line Features[J]. ASTROPHYSICAL JOURNAL,2018,855(1):10.
APA Zhang, Congyao,Yu, Qingjuan,&Lu, Youjun.(2018).Simulating the Galaxy Cluster "El Gordo": Gas Motion, Kinetic Sunyaev-Zel'dovich Signal, and X-Ray Line Features.ASTROPHYSICAL JOURNAL,855(1),10.
MLA Zhang, Congyao,et al."Simulating the Galaxy Cluster "El Gordo": Gas Motion, Kinetic Sunyaev-Zel'dovich Signal, and X-Ray Line Features".ASTROPHYSICAL JOURNAL 855.1(2018):10.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Congyao]'s Articles
[Yu, Qingjuan]'s Articles
[Lu, Youjun]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Congyao]'s Articles
[Yu, Qingjuan]'s Articles
[Lu, Youjun]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Congyao]'s Articles
[Yu, Qingjuan]'s Articles
[Lu, Youjun]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.