Journal article
A preliminary study of Magnetosphere‐Ionosphere‐Thermosphere coupling at Jupiter: Juno multi‐instrument measurements and modelling tools
University of Chinese Academy of Sciences1
Measurement and Instrumentation Systems, National Space Institute, Technical University of Denmark2
University of Iowa3
Observatoire de Paris4
Japan National Institute of Information and Communications Technology5
Université Fédérale Toulouse Midi-Pyrénées6
National Institute for Astrophysics7
University of Texas at San Antonio8
Southwest Research Institute9
University of Liege10
Johns Hopkins University11
National Research Council of Italy12
National Space Institute, Technical University of Denmark13
...and 3 moreThe dynamics of the Jovian magnetosphere are controlled by the interplay of the planet’s fast rotation, its main iogenic plasma source and its interaction with the solar wind. Magnetosphere-Ionosphere-Thermosphere (MIT) coupling processes controlling this interplay are significantly different from their Earth and Saturn counterparts.
At the ionospheric level, they can be characterized by a set of key parameters: ionospheric conductances, electric currents and fields, exchanges of particles along field lines, Joule heating and particle energy deposition. From these parameters, one can determine (1) how magnetospheric currents close into the ionosphere, and (2) the net deposition/extraction of energy into/out of the upper atmosphere associated to MIT coupling.
We present a new method combining Juno multi-instrument data (MAG, JADE, JEDI, UVS, JIRAM and Waves) and modelling tools to estimate these key parameters along Juno’s trajectories. We first apply this method to two southern hemisphere main auroral oval crossings to illustrate how the coupling parameters are derived.
We then present a preliminary statistical analysis of the morphology and amplitudes of these key parameters for eight among the first nine southern perijoves. We aim to extend our method to more Juno orbits to progressively build a comprehensive view of Jovian MIT coupling at the level of the main auroral oval.
Language: | English |
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Year: | 2021 |
Pages: | e2021JA029469 |
ISSN: | 21699402 , 21699380 , 21562202 and 01480227 |
Types: | Journal article |
DOI: | 10.1029/2021JA029469 |
ORCIDs: | 0000-0002-8736-5541 , 0000-0002-1290-7350 , 0000-0002-9552-8822 , 0000-0001-6991-9398 , 0000-0001-8017-5676 , 0000-0003-4998-8008 , 0000-0002-0458-8417 , 0000-0002-9115-0789 , 0000-0002-2514-0187 , 0000-0002-5264-7194 , 0000-0002-1218-0008 , 0000-0002-8565-8746 , 0000-0003-0060-072X , 0000-0002-9938-4707 , Kotsiaros, Stavros , 0000-0002-5471-6202 , 0000-0002-8428-1369 , 0000-0003-2783-0808 , 0000-0002-1625-3462 , 0000-0001-9789-3797 , 0000-0002-4552-4292 and 0000-0001-8817-0589 |