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| Titel |
Electron-scale nested quadrupole Hall field in Cluster observations of magnetic reconnection |
| VerfasserIn |
N. Jain, A. S. Sharma |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 33, no. 6 ; Nr. 33, no. 6 (2015-06-12), S.719-724 |
| Datensatznummer |
250121210
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| Publikation (Nr.) |
 copernicus.org/angeo-33-719-2015.pdf |
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| Zusammenfassung |
| This paper presents the first evidence of
a new and
unique feature of spontaneous reconnection at multiple sites in electron current
sheet, viz. a "nested quadrupole" structure of the Hall field at electron scales, in Cluster observations.
The new nested quadrupole
is a consequence of
electron-scale processes in reconnection.
Whistler response of the upstream plasma to the interaction of electron flows
from neighboring reconnection sites produces a large-scale quadrupole Hall
field enclosing the quadrupole fields of the multiple sites, thus forming a
nested
structure.
Electron-magnetohydrodynamic simulations of an electron
current sheet yields a mechanism of the formation of a nested quadrupole. |
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