Speaker: Dr Hao Cao (UCLA)
Title: Origin and dynamics of planetary magnetic fields: from Juno to JUICE and beyond
Abstract: Magnetic fields are fundamental properties of planetary bodies, providing essential insights into their interiors and space environments. The solar system hosts a diverse group of such fields, from Jupiter’s powerful dynamo to Ganymede’s unique magnetosphere. After briefly reviewing our current understanding of MHD dynamo theory, I will present recent findings from NASA’s Juno mission about Jupiter’s magnetic field, including its long-term secular variation and energy spectrum, and their implications for the planet’s deep interior. The talk then discusses how upcoming JUICE observations will advance our knowledge of both Jupiter’s and Ganymede’s magnetic fields. Shifting to future exploration capabilities, I will present recent progress on developing a temperature-stabilized magnetometer system for lunar surface applications in the Artemis era. The seminar concludes by examining the critical role that magnetic field investigations will play in future planetary exploration.