NAOC Open IR
Analysis of magnetotail flux rope events by ARTEMIS observations
Tian AnMin1; Shi QuanQi1; Zong QiuGang4; Du Jian2; Fu SuiYan4; Dai YaNan1
2014
Source PublicationSCIENCE CHINA-TECHNOLOGICAL SCIENCES
ISSN1674-7321
Volume57Issue:5Pages:1010
AbstractThree earthward flowing magnetic flux ropes observed in the duskside plasma sheet at geocentric solar magnetospheric coordinate X similar to-55 Re by P1 and P2 of acceleration, reconnection, turbulence and electrodynamics of moon's interaction with the sun mission during 13:00-15:00 UT on July 3, 2012, were studied. The morphologies of the flux ropes were studied in detail based on Grad-Shfranov reconstruction method and electronic pitch angle distribution data. It is found that (1) the flux rope cross-sectional dimensions are 1.0 Rex 0.78 Re, 1.3 Rex0.78 Re, and 2.5 Re x 1.25 Re, respectively. The magnetic field lines were asymmetric about the center with field line compression on both sides of the current sheet at the leading region; (2) the electron energy flux data presented asymmetry with larger electron flux and lower temperature in the precursor region. The flux ropes were blocked by the resistance of compressed particle density in the front central plasma sheet and the enhanced magnetic field on its sides; and (3) it is found that the flux rope has a layered structure. From inside out, event 1 can be divided into three regions, namely electronic depletion core region, closed field line region, and the caudal area possible with fields connected with the ionosphere. It suggests that the flux ropes cannot merge with the tail magnetic field lines near the lunar orbit. Especially, the flux rope asymmetrical shape reflects the different reconnection processes that caused it on both sides of the magnetic structure. The events shown in this paper support the multiple X-line magnetic reconnection model for flux ropes with in situ observations.
KeywordPLASMA SHEET GEOTAIL OBSERVATIONS MAGNETIC RECONNECTION EARTHS MAGNETOTAIL FIELD MAGNETOPAUSE EVOLUTION magnetic flux ropes ARTEMIS GS reconstruction method asymmetry
Language英语
Funding Project[Specialized Research Fund for State Key Laboratories] ; [scientific research foundation of Shandong province Outstanding Young Scientist Award] ; [National Natural Science Foundation of China] ; [Shandong Natural Science Foundation]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/71050
Collection中国科学院国家天文台
Affiliation1.山东大学
2.中国科学院空间科学与应用研究中心
3.中国科学院国家天文台
4.北京大学
Recommended Citation
GB/T 7714
Tian AnMin,Shi QuanQi,Zong QiuGang,et al. Analysis of magnetotail flux rope events by ARTEMIS observations[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2014,57(5):1010.
APA Tian AnMin,Shi QuanQi,Zong QiuGang,Du Jian,Fu SuiYan,&Dai YaNan.(2014).Analysis of magnetotail flux rope events by ARTEMIS observations.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,57(5),1010.
MLA Tian AnMin,et al."Analysis of magnetotail flux rope events by ARTEMIS observations".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 57.5(2014):1010.
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