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| Titel |
The study of electron holes in the process of guide-field reconnection: simulation with realistic parameters. |
| VerfasserIn |
S. Markidis, G. Lapenta, Andrey Divin, M. V. Goldman, D. L. Newman |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250043330
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| Zusammenfassung |
| Particle-in-Cell simulations of guide-field magnetic reconnection are performed. Such
common features of guide-field magnetic reconnection, like asymmetric outflow
configuration and fast electron jets are reproduced. We focus our study on the kinetic
properties of the separatrix region. The study of the force balance is presented. As the
separatrix electron jet lines up with the density cavity, complicated multiscale structure arises
there. Electron distribution functions show bi-Maxwellian behavior. Fast electron flows turn
favorable for the development of electrostatic electron-electron streaming and ion-electron
Buneman-like instabilities. In agreement with the other studies [Pritchett, 2004], [Goldman,
2008], electrostatic structures are generated there, which represent the nonlinear stage of
that instabilities. The size of these structures is of the order of electron inertial
length de and thus is larger than Debye-length solitary waves observed by [Cattell,
2002]. In our simulations we use the implicit solver capable of realistic mi-me
ratios (up to 1836) and the result is verified for a wide range of physical parameters. |
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