Quiet, Discrete Auroral Arcs: Acceleration Mechanisms

  title={Quiet, Discrete Auroral Arcs: Acceleration Mechanisms},
  author={Robert L. Lysak and Marius M. Echim and Tomas Karlsson and Octav Marghitu and Robert Rankin and Y. L. Song and T.-H. Watanabe},
  journal={Space Science Reviews},
The theory of the acceleration of auroral particles is reviewed, focusing on developments in the last 15 years. We discuss elementary plasma physics processes leading to acceleration of electrons to energies compatible with emission observed for quiet, discrete auroral arcs, defined as arcs that have time scales of minutes or more and spatial scales ranging from less than 1 km to tens of kilometers. For context, earlier observations are first described briefly. The theoretical fundamentals of… Expand
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