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Magnetospheric Multiscale Observations of Electron Vortex Magnetic Hole in the Turbulent Magnetosheath Plasma
Huang, S. Y.1,2; Sahraoui, F.2; Yuan, Z. G.1; He, J. S.3; Zhao, J. S.4; Le Contel, O.2; Deng, X. H.5; Zhou, M.6; Fu, H. S.7; Shi, Q. Q.8; Lavraud, B.9,10; Pang, Y.5; Yang, J.7; Wang, D. D.; Li, H. M.5; Yu, X. D.1; Pollock, C. J.11; Giles, B. L.11; Torbert, R. B.12; Russell, C. T.13; Goodrich, K. A.14; Gershman, D. J.11; Moore, T. E.11; Ergun, R. E.14; Khotyaintsev, Y. V.15; Lindqvist, P. -A.16; Strangeway, R. J.13; Magnes, W.17; Bromund, K.18; Leinweber, H.13; Plaschke, F.17; Anderson, B. J.18; Burch, J. L.19
2017-02-20
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume836Issue:2Pages:8
Corresponding AuthorHuang, S. Y.(shiyonghuang@whu.edu.cn)
AbstractWe report on the observations of an electron vortex magnetic hole corresponding to a new type of coherent structure in the turbulent magnetosheath plasma using the Magnetospheric Multiscale mission data. The magnetic hole is characterized by a magnetic depression, a density peak, a total electron temperature increase (with a parallel temperature decrease but a perpendicular temperature increase), and strong currents carried by the electrons. The current has a dip in the core region and a peak in the outer region of the magnetic hole. The estimated size of the magnetic hole is about 0.23 rho(i) (similar to 30 rho(e)) in the quasi-circular cross-section perpendicular to its axis, where rho(i) and rho(e) are respectively the proton and electron gyroradius. There are no clear enhancements seen in high-energy electron fluxes. However, there is an enhancement in the perpendicular electron fluxes at 90 degrees pitch angle inside the magnetic hole, implying that the electrons are trapped within it. The variations of the electron velocity components V-em and V-en suggest that an electron vortex is formed by trapping electrons inside the magnetic hole in the cross-section in the M-N plane. These observations demonstrate the existence of a new type of coherent structures behaving as an electron vortex magnetic hole in turbulent space plasmas as predicted by recent kinetic simulations.
KeywordEarth planets and satellites: magnetic fields planets and satellites: terrestrial planets plasmas turbulence
DOI10.3847/2041-8213/aa5f50
WOS KeywordSOLAR-WIND ; ROTATIONAL DISCONTINUITIES ; EARTHS MAGNETOSHEATH ; CLUSTER OBSERVATIONS ; KINETIC SIMULATIONS ; DISSIPATION RANGE ; RECONNECTION ; FIELD ; DYNAMICS ; SPECTRA
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000396007700001
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23211
Collection中国科学院紫金山天文台
Corresponding AuthorHuang, S. Y.
Affiliation1.Wuhan Univ, Sch Elect Informat, Wuhan, Peoples R China
2.UPMC, CNRS, Ecole Polytech, Lab Phys Plasmas, Palaiseau, France
3.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China
4.Chinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing, Peoples R China
5.Nanchang Univ, Inst Space Sci & Technol, Nanchang, Jiangxi, Peoples R China
6.Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA
7.Beihang Univ, Sch Space & Environm, Beijing, Peoples R China
8.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China
9.Univ Toulouse UPS, Inst Rech & Astrophys & Planetol, Toulouse, France
10.CNRS, UMR 5277, Toulouse, France
11.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
12.Univ New Hampshire, Durham, NH 03824 USA
13.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA
14.Univ Colorado, Boulder, CO 80309 USA
15.Swedish Inst Space Phys, Uppsala, Sweden
16.Royal Inst Technol, Stockholm, Sweden
17.Austrian Acad Sci, Space Res Inst, Graz, Austria
18.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA
19.Southwest Res Inst, San Antonio, TX USA
Recommended Citation
GB/T 7714
Huang, S. Y.,Sahraoui, F.,Yuan, Z. G.,et al. Magnetospheric Multiscale Observations of Electron Vortex Magnetic Hole in the Turbulent Magnetosheath Plasma[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,836(2):8.
APA Huang, S. Y..,Sahraoui, F..,Yuan, Z. G..,He, J. S..,Zhao, J. S..,...&Burch, J. L..(2017).Magnetospheric Multiscale Observations of Electron Vortex Magnetic Hole in the Turbulent Magnetosheath Plasma.ASTROPHYSICAL JOURNAL LETTERS,836(2),8.
MLA Huang, S. Y.,et al."Magnetospheric Multiscale Observations of Electron Vortex Magnetic Hole in the Turbulent Magnetosheath Plasma".ASTROPHYSICAL JOURNAL LETTERS 836.2(2017):8.
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