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| Titel |
Evolution of magnetic helicity in the course of kinetic magnetic reconnection |
| VerfasserIn |
T. Wiegelmann, J. Büchner |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 8, no. 3 ; Nr. 8, no. 3, S.127-140 |
| Datensatznummer |
250005514
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| Publikation (Nr.) |
 copernicus.org/npg-8-127-2001.pdf |
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| Zusammenfassung |
| We investigate the evolution of
magnetic helicity density in the course of 2D and 3D kinetic magnetic
reconnection through thin current sheets. In 2D, the helicity density near
a reconnection X-line becomes purely quadrupolar structured, while in 3D,
an additional dipolar structure occurs. This dipolar structure is related
to kinetic current instabilities and becomes dominant for spontaneous 3D
reconnection, in accordance with the dominating current instabilities. The
2D simulations have been carried out with a newly developed Vlasov-code
and the 3D simulations with the particle-in-cell code GISMO. |
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