globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068747
Ion-scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS
Author: Eastwood J.P.; Phan T.D.; Cassak P.A.; Gershman D.J.; Haggerty C.; Malakit K.; Shay M.A.; Mistry R.; Øieroset M.; Russell C.T.; Slavin J.A.; Argall M.R.; Avanov L.A.; Burch J.L.; Chen L.J.; Dorelli J.C.; Ergun R.E.; Giles B.L.; Khotyaintsev Y.; Lavraud B.; Lindqvist P.A.; Moore T.E.; Nakamura R.; Paterson W.; Pollock C.; Strangeway R.J.; Torbert R.B.; Wang S.
Source Publication: Geophysical Research Letters
ISSN: 0094-9634
EISSN: 1944-9365
Publishing Year: 2016
Volume: 43, Issue:10
pages begin: 4716
pages end: 4724
Language: 英语
Keyword: flux rope ; magnetic reconnection ; magnetopause ; magnetospheric multiscale ; secondary island
Scopus Keyword: Ions ; Magnetic field measurement ; Magnetic fields ; Magnetism ; Magnetopause ; Magnetosphere ; Plasma diagnostics ; Plasma simulation ; Rope ; Electric and magnetic field measurements ; Flux ropes ; Flux transfer events ; Ion inertial length ; Magnetic reconnections ; Magnetospheric multi scale ; Secondary islands ; Structure and properties ; Magnetoplasma ; conductivity ; electric field ; flux measurement ; island ; magnetic field ; magnetopause ; magnetosphere ; plasma ; spacecraft
English Abstract: New Magnetospheric Multiscale (MMS) observations of small-scale (~7 ion inertial length radius) flux transfer events (FTEs) at the dayside magnetopause are reported. The 10 km MMS tetrahedron size enables their structure and properties to be calculated using a variety of multispacecraft techniques, allowing them to be identified as flux ropes, whose flux content is small (~22 kWb). The current density, calculated using plasma and magnetic field measurements independently, is found to be filamentary. Intercomparison of the plasma moments with electric and magnetic field measurements reveals structured non-frozen-in ion behavior. The data are further compared with a particle-in-cell simulation. It is concluded that these small-scale flux ropes, which are not seen to be growing, represent a distinct class of FTE which is generated on the magnetopause by secondary reconnection. ©2016. The Authors.
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Document Type: 期刊论文
Appears in Collections:科学计划与规划

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Affiliation: Blackett Laboratory, Imperial College London, London, United Kingdom

Recommended Citation:
Eastwood J.P.,Phan T.D.,Cassak P.A.,et al. Ion-scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS[J]. Geophysical Research Letters,2016-01-01,43(10).
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