A complete model of the Ceres transient shock: from generation to dissipation
Abstract
In June 2015, while DAWN was orbiting Ceres at about 10 Ceres radii away, energetic charged particles were recorded that are best explained by a transient shock, caused by a comet like interaction with the solar wind. The required strength of the atmosphere has been evaluated to determine if it is consistent with previous observations. In this work, we simulate the complete atmosphere excitation-interaction-loss process. We calculate the total energy input from the associated solar energetic particle (SEP) event, obtain the model-driven atmosphere profile with such energy input, and then model the atmosphere-solar wind interaction to determine the 3-D profile of the shock. With the time varation of the SEP event, we model the different stages of the atmosphere and plasma interaction. In re-constructing the event, we determine the entire lifecycle of the transient atmosphere produced on an airless body activated by a solar event, and its subsequent loss in its interaction with the solar wind.
- Publication:
-
AAS/Division for Planetary Sciences Meeting Abstracts #49
- Pub Date:
- October 2017
- Bibcode:
- 2017DPS....4911401J