Comparison of Enhancements in Energetic Neutral Atom and Auroral All Sky Images.
Abstract
Aurora brightening is a process that involves the acceleration of charged particles from the magnetosphere to the ionosphere. The structures in the aurora have been found to be associated with mesoscale structures in the magnetotail. To further understand the physical processes connecting the magnetosphere and ionosphere, a correlation between the ion temperature increase in the magnetosphere and aurora brightening is investigated. The physical properties of the ions in the magnetosphere, in particular the temperature, were studied through the use of the energetic neutral atoms (ENA) imager in the Two Wide Angle Imaging Neutral Atom Spectrometer (TWINS) satellite. The heated ions have been associated with magnetic reconnection and dipolarization fronts. The topological change of the field lines was examined to determine the prerequisites for aurora formation.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMSM11B3282A
- Keywords:
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- 0310 Airglow and aurora;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 2704 Auroral phenomena;
- MAGNETOSPHERIC PHYSICS;
- 2716 Energetic particles: precipitating;
- MAGNETOSPHERIC PHYSICS;
- 2772 Plasma waves and instabilities;
- MAGNETOSPHERIC PHYSICS