Quantitative analysis of a Hall system in the exhaust of asymmetric magnetic reconnection
文献类型:期刊论文
作者 | Zhang, Y. C.1,2,3,4; Lavraud, B.3,4; Dai, L.1; Wang, C.1; Marchaudon, A.3,4; Avanov, L.5,6; Burch, J.7; Chandler, M.8; Dorelli, J.5; Duan, S. P.1 |
刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
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出版日期 | 2017-05-01 |
卷号 | 122期号:5页码:5277-5289 |
ISSN号 | 2169-9380 |
DOI | 10.1002/2016JA023620 |
文献子类 | Article |
英文摘要 | Taking advantage of high-resolution measurements from the MMS mission, we find evidence for a complete Hall system in the exhaust of asymmetric magnetic reconnection 40D(i) downstream of the X line. The investigation of the fine structure of the Hall system reveals that it displays features in the exhaust similar to those reported previously in the ion diffusion region by simulations and observations. This finding confirms the importance of particle-scale processes in the reconnection exhaust as well. On the magnetospheric side of the exhaust, electrons are strongly accelerated by parallel electric fields. This process significantly contributes to feed the Hall current system, resulting in a nonnegligible Hall magnetic field signature on this side despite an otherwise lower density. Calculation of the induced out-of-plane magnetic field by in-plane currents (based on Biot-Savart law) provides direct quantitative evidence for the process of Hall magnetic field generation by the Hall current system. A strong normal Hall electric field is present only on the magnetospheric side of the exhaust region, consistent with previous works. Multipoint data analysis shows that the ion pressure gradient in the ion momentum equation produces this Hall electric field. This global pattern of the Hall system can be explained by kinetic Alfven wave theory. |
WOS关键词 | NEAR-EARTH MAGNETOTAIL ; DAYSIDE MAGNETOPAUSE ; DIFFUSION REGION ; COLLISIONLESS RECONNECTION ; GEOTAIL OBSERVATIONS ; DISTANT MAGNETOTAIL ; DECOUPLING REGION ; ELECTRIC-FIELD ; ALFVEN WAVES ; OHMS LAW |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
WOS记录号 | WOS:000403912500028 |
出版者 | AMER GEOPHYSICAL UNION |
资助机构 | National Natural Science Foundation of China(41574163 ; National Natural Science Foundation of China(41574163 ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; CNRS ; CNRS ; CNES ; CNES ; 41574159 ; 41574159 ; 41574161 ; 41574161 ; 41231066) ; 41231066) ; National Natural Science Foundation of China(41574163 ; National Natural Science Foundation of China(41574163 ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; CNRS ; CNRS ; CNES ; CNES ; 41574159 ; 41574159 ; 41574161 ; 41574161 ; 41231066) ; 41231066) ; National Natural Science Foundation of China(41574163 ; National Natural Science Foundation of China(41574163 ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; CNRS ; CNRS ; CNES ; CNES ; 41574159 ; 41574159 ; 41574161 ; 41574161 ; 41231066) ; 41231066) ; National Natural Science Foundation of China(41574163 ; National Natural Science Foundation of China(41574163 ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; CNRS ; CNRS ; CNES ; CNES ; 41574159 ; 41574159 ; 41574161 ; 41574161 ; 41231066) ; 41231066) |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/49860] ![]() |
专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
通讯作者 | Zhang, Y. C. |
作者单位 | 1.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 3.Univ Toulouse UPS, Inst Rech & Astrophys & Planotol, Toulouse, France 4.Ctr Natl Rech Sci, Toulouse, France 5.NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA 6.Univ Maryland, Dept Astron, College Pk, MD 20742 USA 7.Southwest Res Inst, San Antonio, TX USA 8.NASA, Marshall Space Flight Ctr, Huntsville, AL USA 9.Univ Colorado Boulder, Lab Atmospher & Space Phys, Boulder, CO USA 10.Swedish Inst Space Phys, Uppsala, Sweden |
推荐引用方式 GB/T 7714 | Zhang, Y. C.,Lavraud, B.,Dai, L.,et al. Quantitative analysis of a Hall system in the exhaust of asymmetric magnetic reconnection[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2017,122(5):5277-5289. |
APA | Zhang, Y. C..,Lavraud, B..,Dai, L..,Wang, C..,Marchaudon, A..,...&Torbert, R..(2017).Quantitative analysis of a Hall system in the exhaust of asymmetric magnetic reconnection.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,122(5),5277-5289. |
MLA | Zhang, Y. C.,et al."Quantitative analysis of a Hall system in the exhaust of asymmetric magnetic reconnection".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 122.5(2017):5277-5289. |
入库方式: OAI收割
来源:地质与地球物理研究所
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