Quantitative analysis of a Hall system in the exhaust of asymmetric magnetic reconnection

doi:10.1002/2016JA023620

CORC > 地质与地球物理研究所 > 中国科学院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

	Quantitative analysis of a Hall system in the exhaust of asymmetric magnetic reconnection
	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
	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
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000403912500028
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)
内容类型	期刊论文
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.