Jupiter’s satellite auroral footprints are a manifestation of the satellite-magnetosphere interaction of the Galilean moons. Juno’s polar elliptical orbit enables crossing the magnetic flux tubes connecting each Galilean moons with their associated auroral emission. Juno’s payload allows measuring the fields and particle population in the flux tubes while remotely sensing their associated auroral emissions. During its thirtieth perijove, Juno crossed the flux tube directly connected to Ganymede’s leading footprint spot, a unique event in the entire Juno prime mission. Juno revealed a highly-structured precipitating electron flux, up to 316 mW/m2, while measuring both a small perturbation in the magnetic field azimuthal component and small Poynting flux, with an estimated total downward current of 4.2 ± 1.2 kA. Based on the evolution of the footprint morphology and the field and particle measurements, Juno transited for the first time through a region connected to the transhemispheric electron beam of the Ganymede footprint.

A Comprehensive Set of Juno In Situ and Remote Sensing Observations of the Ganymede Auroral Footprint / Hue, V.; Szalay, J. R.; Greathouse, T. K.; Bonfond, B.; Kotsiaros, S.; Louis, C. K.; Sulaiman, A.; Clark, G.; Allegrini, F.; Gladstone, G. R.; Paranicas, C.; Versteeg, M. H.; Mura, A.; Moirano, A.; Gershman, D. J.; Bolton, S. J.; Connerney, J. E. P.; Davis, M. W.; Ebert, R. W.; Gérard, J. ‐C.; Giles, R. S.; Grodent, D. C.; Imai, M.; Kammer, J. A.; Kurth, W. S.; Lamy, L.; Mauk, B. H.. - In: GEOPHYSICAL RESEARCH LETTERS. - ISSN 0094-8276. - (2022). [10.1029/2021GL096994]

A Comprehensive Set of Juno In Situ and Remote Sensing Observations of the Ganymede Auroral Footprint

Moirano, A.;
2022

Abstract

Jupiter’s satellite auroral footprints are a manifestation of the satellite-magnetosphere interaction of the Galilean moons. Juno’s polar elliptical orbit enables crossing the magnetic flux tubes connecting each Galilean moons with their associated auroral emission. Juno’s payload allows measuring the fields and particle population in the flux tubes while remotely sensing their associated auroral emissions. During its thirtieth perijove, Juno crossed the flux tube directly connected to Ganymede’s leading footprint spot, a unique event in the entire Juno prime mission. Juno revealed a highly-structured precipitating electron flux, up to 316 mW/m2, while measuring both a small perturbation in the magnetic field azimuthal component and small Poynting flux, with an estimated total downward current of 4.2 ± 1.2 kA. Based on the evolution of the footprint morphology and the field and particle measurements, Juno transited for the first time through a region connected to the transhemispheric electron beam of the Ganymede footprint.
2022
Jupiter Ganymede Juno
01 Pubblicazione su rivista::01a Articolo in rivista
A Comprehensive Set of Juno In Situ and Remote Sensing Observations of the Ganymede Auroral Footprint / Hue, V.; Szalay, J. R.; Greathouse, T. K.; Bonfond, B.; Kotsiaros, S.; Louis, C. K.; Sulaiman, A.; Clark, G.; Allegrini, F.; Gladstone, G. R.; Paranicas, C.; Versteeg, M. H.; Mura, A.; Moirano, A.; Gershman, D. J.; Bolton, S. J.; Connerney, J. E. P.; Davis, M. W.; Ebert, R. W.; Gérard, J. ‐C.; Giles, R. S.; Grodent, D. C.; Imai, M.; Kammer, J. A.; Kurth, W. S.; Lamy, L.; Mauk, B. H.. - In: GEOPHYSICAL RESEARCH LETTERS. - ISSN 0094-8276. - (2022). [10.1029/2021GL096994]
File allegati a questo prodotto
File Dimensione Formato  
Hue_A Comprehensive Set of Juno_2022.pdf

solo gestori archivio

Tipologia: Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 3.5 MB
Formato Adobe PDF
3.5 MB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1615648
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 10
social impact