P012-06
Jupiter’s Polar Magnetosphere and Aurora: An Overview of New Results from Juno

Monday, 7 December 2020: 17:50
Virtual
Robert W Ebert1,2, Frederic Allegrini3,4, Fragn Bagenal5, Scott J Bolton1, George B Clark6, John E P Connerney7, Randy Gladstone1,2, Steven Levin8, William S Kurth9, Yasmina M. Martos7, Barry Mauk10 and Alessandro Mura11, (1)Southwest Research Institute, San Antonio, TX, United States, (2)University of Texas at San Antonio, San Antonio, TX, United States, (3)Southwest Research Institute San Antonio, San Antonio, TX, United States, (4)University of Texas at San Antonio, Department of Physics and Astronomy, San Antonio, TX, United States, (5)University of Colorado Boulder - LASP, Boulder, United States, (6)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, (7)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (8)Jet Propulsion Laboratory, Pasadena, CA, United States, (9)University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, (10)The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, (11)IAPS-INAF, Rome, Italy
Recorded Presentation
Abstract:
As Juno completes its 4th year in orbit around Jupiter, observations from its suite of particles, fields, and auroral imaging instruments continue to revolutionize our understanding of Jupiter’s polar magnetosphere and aurora. Discoveries include the prevalence of stochastic acceleration in powering various auroral emissions, weak and filamentary field-aligned currents mapping to the main auroral oval, the presence of high-energy (MeV) electrons emanating from the polar cap, iogenic heavy ions at high latitude, among others. In this presentation, we highlight recent results related to several of these topics, including auroral emissions and their magnetospheric drivers, charged particle populations and waves associated with satellite footprint tail aurora, wave-particle interactions in Jupiter’s polar cap, and transient auroral emissions. We place these new results into context with observations from earlier in the mission. We describe how these Juno results are challenging our understanding of auroral physics and magnetosphere dynamics at Jupiter and how they may be used to inform future missions focused on solar system exploration.
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