Hubble and Juno observations of Jupiter’s auroras and magnetospheric dynamics during the Juno Extended Mission
- 1University of Leicester, Leicester, UK
- 2Boston University, Boston, USA
- 3University of Liège, Liège, Belgium
- 4Southwest Research Institute, San Antonio, USA
- 5University of Colorado, Boulder, USA
- 6Jet Propulsion Laboratory, Pasadena, USA
- 7University of Minnesota, Minneapolis and Saint Paul, USA
- 8Goddard Spaceflight Center, Greenbelt, USA
- 9The Johns Hopkins University Applied Physics Laboratory, Laurel, USA
We present simultaneous Juno and Hubble Space Telescope of Jupiter's far-ultraviolet auroras obtained as part of a programme of observations covering 3 years of Juno's Extended Mission. We show that bright, expanded dusk-side southern main emission is associated with large-scale convection dynamics, dusk-side main emission arcs are associated with field-aligned currents, and equatorward diffuse emission and patches are associated with plasma injections in the middle magnetosphere occurring within intervals of enhanced plasma density, ongoing interchange motion and magnetospheric convection. These results shed light on the relation between the main auroral emission and magnetosphere-ionosphere coupling currents, and radial force balance in the magnetosphere. We also report on unusually bright and expanded southern auroral emissions observed during PJ 43.
How to cite: Nichols, J. D., Clarke, J., Grodent, D., Bonfond, B., Cowley, S., Gladstone, R., Bagenal, F., Orton, G., Lysak, B., Allegrini, F., Connerney, J., Mauk, B., Clark, G., Wilson, R., and Ebert, R.: Hubble and Juno observations of Jupiter’s auroras and magnetospheric dynamics during the Juno Extended Mission, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-16086, https://doi.org/10.5194/egusphere-egu23-16086, 2023.
