Two Types of Auroral Emission Detected on Dayside.

The FUV instrument on IMAGE frequently observes localized ultraviolet emission on the high latitude dayside, poleward of the normal auroral oval. There are two different types of these localized emissions: Proton precipitation into the cusp after lobe reconnection at the magnetopause and emissions produced by electron acceleration after reconnection.

(2001: H. U. Frey, S. B. Mende, T. J. Immel, J.-C. Gerard, B. Hubert, S. A. Fuselier)