[en] The Galilean satellite auroral footprints result from the interaction between the co-rotating iogenic plasma and the different satellites. Since its arrival at Jupiter in 2016, Juno continues to revolutionize the field of moon-magnetosphere interaction by providing, for each perijove, multi-instrument datasets combining in-situ and remote-sensing measurements of the magnetic fluxtubes connecting each satellite with their auroral footprints. So far, the Juno measurements favor an Alfvénic acceleration mechanism generating both the main auroral footprint spot and the footprint tail emissions. This work focuses on the Ganymede fluxtube crossing of PJ30 (8 Nov 2020), during which Juno appeared to be connected to Ganymede’s Main Alfvén Wing (MAW) southern footprint. The peak MAW UV-brightness recorded by Juno-UVS was 472 +/- 40 kR, while JADE-E recorded a highly structured downward precipitating electron energy fluxes peaking at ∼300 mW/m2 and an averaged downward precipitating energy flux of 51 mW/m2. We present a multi-instrument characterization of this event.
Research Center/Unit :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hue, Vincent
Greathouse, Thomas
Szalay, Jamie
Gladstone, Randy
Allegrini, Frédéric
Kotsiaros, Stavros
Louis, Corentin
Mura, Alessandro
Kammer, Joshua
Clark, George
Bonfond, Bertrand ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Gérard, Jean-Claude ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Grodent, Denis ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)