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| Titel |
Linear Stability Analysis of a Collisionless Distribution Function for the Force-Free Harris Sheet |
| VerfasserIn |
Fiona Wilson, Thomas Neukirch |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250076310
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| Zusammenfassung |
| A discussion is presented of the first linear stability analysis of the collisionless distribution
function recently found by Harrison and Neukirch for the force-free Harris sheet (Physical
Review Letters 102, 135003, 2009). Macroscopic instabilities are considered, and the
perturbations are assumed to be two-dimensional only. The stability analysis is based on the
technique of integration over unperturbed orbits. Similarly to the Harris sheet case (Nuovo
Cimento, 23:115, 1962), this is only possible by using approximations to the exact orbits,
which are unknown. Furthermore, the approximations for the Harris sheet case
cannot be used for the force-free Harris sheet, and so new techniques have to be
developed in order to make analytical progress. In addition to the full problem, the
long wavelength limit is considered, and the results of the two cases are compared.
The dependence of the stability on various equilibrium parameters is investigated. |
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