Juno Plasma Wave Observations at Ganymede
- 1The University of Iowa, Physics & Astronomy, Iowa City, United States of America (william-kurth@uiowa.edu)
- 2The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
- 3Southwest Research Institute, San Antonio, TX, USA
- 4Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, Texas, USA
- 5Goddard Space Flight Center, Greenbelt, MD, USA
- 6Dept of Electrical Engineering & Information Science, National Inst. of Technology (KOSEN), Niihama College, Niihama, Ehime, Japan
- 7Dept of Space Physics, Institute of Atmospheric Physics of the Czech Academy of Sciences, Prague, Czechia. (8) Faculty of Mathematics and Physics, Charles University, Prague, Czechia
- 9Center for Space Physics, Boston University, Boston, MA, USA
- 10Institute of Geophysics and Meteorology, University of Cologne, Cologne, Germany
- 11School of Cosmic Physics, DIAS Dunsink Observatory, Dublin Institute for Advanced Studies, Dublin, Ireland
The Juno Waves instrument measured plasma waves associated with Ganymede's magnetosphere during its flyby on 7 June, day 158, 2021. Three distinct regions were identified including a magnetotail/wake, and nightside and dayside regions in the main magnetosphere distinguished by their electron densities and associated variability. The main magnetosphere includes electron cyclotron harmonic emissions including a band at the upper hybrid frequency, as well as whistler-mode chorus and hiss. These waves likely interact with energetic electrons in Ganymede’s magnetosphere by pitch angle scattering and/or accelerating the electrons. The magnetotail/wake is accentuated by low-frequency turbulence and electrostatic solitary waves. Radio emissions observed before and after the flyby likely have their source in Ganymede’s magnetosphere.
How to cite: Kurth, W., Sulaiman, A. H., Hospodarsky, G. B., Menietti, J. D., Mauk, B. H., Clark, G., Allegrini, F., Valek, P., Connerney, J. E. P., Waite, J. H., Bolton, S. J., Imai, M., Santolik, O., Li, W., Duling, S., Saur, J., and Louis, C.: Juno Plasma Wave Observations at Ganymede, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-10441, https://doi.org/10.5194/egusphere-egu22-10441, 2022.
