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| Titel |
Properties of lower-hybrid range wave activity at reconnection jet edge: 3D PIC simulations |
| VerfasserIn |
Andrey Divin, Yuri Khotyaintsev, Andris Vaivads, Mats André, Giovanni Lapenta, Stefano Markidis |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250098561
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| Publikation (Nr.) |
 EGU/EGU2014-14250.pdf |
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| Zusammenfassung |
| Reconnection fronts are areas of intense currents and enhanced wave activity, since magnetic
flux and plasma are piled up there when the accelerated flow encounters denser ambient
current sheet. Observations and numerical simulations show that the fronts generate a
variety of waves ranging from MHD frequencies up to lower hybrid frequency and
above.
In the present study we use 2D and 3D Particle-in-Cell (PIC) simulations to investigate
the properties of the lower hybrid range waves developing at hot reconnected plasma - current
sheet interface. Calculations are performed using implicit parallel code iPIC3D starting from
conventional Harris current sheet. Initial evolution of the jet is simulated using
2D approach to save computational time, but 3D calculations are implemented at
later stages in order to observe instability linear stage, saturation and transition to
turbulence.
Properties of the linear stage match closely theoretical predictions for the lower hybrid
drift instability. During saturation, the mode produces intense electric fields (several Alfvén
in electric fields normalized unit) that can provide an additional mechanism of electron
heating at reconnection jet fronts. |
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