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| Titel |
Coalescence of magnetic flux ropes observed in the tailward high speed flows |
| VerfasserIn |
Yan Zhao, Rongsheng Wang, Aimin Du |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250151479
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| Publikation (Nr.) |
 EGU/EGU2017-16067.pdf |
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| Zusammenfassung |
| We report a tailward high speed flow event observed by Cluster during 0203:00UT-0205:30UT
on September 20, 2003. Within the flows, a series of three bipolar Bzsignatures were
observed. The first and third bipolar Bzsignatures are identified as magnetic flux
ropes while the middle one is found to result from the collision of the two flux
ropes. A vertical thin current layer was embedded in the center of the middle bipolar
Bzsignature. Combining the plasma, electric field and wave data around the thin
current layer, we conclude that the two magnetic flux ropes were coalescing. The
observations indicate that coalescence of magnetic flux ropes can happen in the regions
away from reconnection site, and can produce energetic electrons and waves. A
basic criterion for identify the coalescence in the magnetotail is proposed also. |
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