Io's volcanism controls Jupiter's radio emissions

摘要: [1] Jupiter's sodium nebula showed an enhancement in late May through the beginning of June 2007. This means Io's volcanic activity and magnetosphere's plasma content increased during this period. On other hand, Jupiter's radio emission called HOM became quiet after enhancement. The is considered to be related aurorae on Jupiter. These observation results therefore suggest that increase supply from Io into magnetosphere weakens its field-aligned current, which generates emissions By comparing our recent model results, we add supporting evidence possibility volcanism controls magnetospheric activity.