Juno Observations Set New Constraints on the Electrodynamic Interaction Between Io and Jupiter.
S Kotsiaros1,2, J E P Connerney3,4, J Saur5
1Aurora Technology BV for ESA - European Space Agency European Space Astronomy Centre (ESA/ESAC) Villanueva de La Cañada Spain.
Journal of Geophysical Research. Space Physics
|December 2, 2024
Summary
Juno
Area of Science:
- Magnetohydrodynamics
- Plasma physics
- Planetary science
Background:
- Jupiter's moon Io is volcanically active, influencing Jupiter's magnetosphere.
- Juno's unique orbit allows novel observations of the Jupiter-Io system.
Purpose of the Study:
- To model current distribution within Io's flux tube and Alfvén wings.
- To analyze Juno's magnetic field data from Io-Jupiter interactions.
Main Methods:
- Developed a methodology to model current distribution in the Io's flux tube and Alfvén wings.
- Analyzed magnetic field signatures from Juno's perijove passes.
Main Results:
- Observed complex, filamentary field-aligned currents within the Io's flux tube and Alfvén wings.
- Found strong correlations between current intensity, particle energy flux, and Poynting flux.
- Quantified the strength of the Io-Jupiter magnetospheric interaction.
Conclusions:
- Juno's observations reveal intricate electrodynamic coupling between Jupiter and Io.
- The study provides constraints on the Io-Jupiter interaction dynamics.
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