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  • Zhonghua Yao, Ruilong Guo, Yong Wei, Bertrand Bonfond, Denis Grodent, Binzheng Zhang, William R Dunn, Zuyin Pu. 2024: Recent advances on the magnetic reconnection, dipolarization and auroral processes at giant planets from the perspective of comparative planetology. Earth and Planetary Physics. DOI: 10.26464/epp2024017
    Citation: Zhonghua Yao, Ruilong Guo, Yong Wei, Bertrand Bonfond, Denis Grodent, Binzheng Zhang, William R Dunn, Zuyin Pu. 2024: Recent advances on the magnetic reconnection, dipolarization and auroral processes at giant planets from the perspective of comparative planetology. Earth and Planetary Physics. DOI: 10.26464/epp2024017
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Recent advances on the magnetic reconnection, dipolarization and auroral processes at giant planets from the perspective of comparative planetology

  • Magnetic reconnection and dipolarization are crucial processes in driving magnetospheric dynamics, including particle energization, mass circulation, auroral processes, etc. Recent studies revealed that these processes at Saturn and Jupiter are fundamentally different from the ones at Earth. The reconnection and dipolarization processes are far more important than previously expected in the dayside magnetodisc of Saturn and potentially Jupiter. Dayside magnetodisc reconnection was directly identified using Cassini measurements (Guo et al., 2018b), and was found to be drizzle-like and rotating in Saturn’s magnetosphere (Delamere et al., 2015b; Guo et al., 2019; Yao et al., 2017a). Moreover, magnetic dipolarization could also exist at Saturn’s dayside (Yao et al., 2018), which is fundamentally different from the terrestrial situation. These new results would significantly improve our understandings of giant planetary magnetospheric dynamics and provide key insights to revealing the physics for planetary aurorae. We here briefly review these recent advances and their potential implications for future investigations.
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