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| Titel |
Observations of Double Layers in Earth |
| VerfasserIn |
R. E. Ergun, L. Andersson, J. Tao, V. Angelopoulos, J. Bonnell, J. P. McFadden, D. E. Larson, A. Roux, O. LeContel, K.-H. Glassmeier |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250027125
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| Zusammenfassung |
| We report the first direct observations of parallel electric fields carried by double layers (DLs) in the central plasma sheet of the Earth’s magnetosphere. The observations are made by the THEMIS spacecraft. The DLs have a parallel electric field signal that is analogous to that reported by the FAST satellite in the auroral acceleration region which has been verified by numerical simulations. The most interesting of the observations is a series of five or more DLs made by the THEMIS D spacecraft at ~10 earth radii (RE) during a bursty bulk flow event. DLs also are observed in the current sheet and plasma sheet boundary layer, all during magnetically active times. These observations imply that strongly nonlinear and kinetic behavior is intrinsic to the Earth’s plasma sheet. |
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