[en] Jupiter's sodium nebula showed an enhancement in late May through beginning of June, 2007. This means Io's volcanic activity and the magnetosphere's plasma content increased during this period. On the other hand, Jupiter's radio emission called HOM became quiet after the sodium nebula enhancement. The HOM emission is considered to be related to activity of aurorae on Jupiter. These observation results therefore suggest that the increase in plasma supply from Io into Jupiter's magnetosphere weakens its field aligned current, which generates the radio emissions and aurorae on Jupiter. By comparing our observation results to recent model and observation results we add supporting evidence to the possibility that Io's volcanism controls Jupiter's magnetospheric activity.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Yoneda, Mizuki; Tohoku University > Planetary Plasma and Atmospheric Research Center
Tsuchiya, F.; Tohoku University > Planetary Plasma and Atmospheric Research Center
Misawa, H.; Tohoku University > Planetary Plasma and Atmospheric Research Center
Bonfond, Bertrand ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Tao, Chihiro; Japan Aerospace Exploration Agency
Kagitani, M.; Tohoku University > Planetary Plasma and Atmospheric Research Center
Okano, S.; Tohoku University > Planetary Plasma and Atmospheric Research Center
Language :
English
Title :
Io's volcanism controls Jupiter's radio emissions
Publication date :
2013
Journal title :
Geophysical Research Letters
ISSN :
0094-8276
eISSN :
1944-8007
Publisher :
American Geophysical Union, Washington, United States - District of Columbia
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