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The Infrared Footprint Tracks of Io, Europa and Ganymede at Jupiter Observed by Juno-JIRAM
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  • Alessandro Moirano,
  • Alessandro Mura,
  • Vincent Hue,
  • Bertrand Bonfond,
  • Linus Alexander Head,
  • John E. P. Connerney,
  • Alberto Adriani,
  • Francesca Altieri,
  • Chiara Castagnoli,
  • Andrea Cicchetti,
  • Bianca Maria Dinelli,
  • Davide Grassi,
  • Alessandra Migliorini,
  • Maria L. Moriconi,
  • Raffaella Noschese,
  • Giuseppe Piccioni,
  • Christina Plainaki,
  • Pietro Scarica,
  • Giuseppe Sindoni,
  • Roberto Sordini,
  • Federico Tosi,
  • Diego Turrini,
  • Francesca Zambon
Alessandro Moirano
INAF-IAPS

Corresponding Author:[email protected]

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Alessandro Mura
INAF-IAPS
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Vincent Hue
Aix-Marseille Université, CNRS, CNES, Institut Origines, LAM
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Bertrand Bonfond
Université de Liège
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Linus Alexander Head
Université de Liège
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John E. P. Connerney
NASA Goddard Space Flight Center
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Alberto Adriani
IAPS-INAF
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Francesca Altieri
INAF
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Chiara Castagnoli
INAF-IAPS
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Andrea Cicchetti
Istituto Nazionale di Astrofisica
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Bianca Maria Dinelli
Istituto di Scienza dell'Atmosfera e del Clima - CNR
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Davide Grassi
INAF
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Alessandra Migliorini
INAF
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Maria L. Moriconi
CNR-ISAC
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Raffaella Noschese
Istituto Nazionale di Astrofisica
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Giuseppe Piccioni
INAF
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Christina Plainaki
Agenzia Spaziale Italiana
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Pietro Scarica
INAF
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Giuseppe Sindoni
INAF
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Roberto Sordini
INAF-IAPS
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Federico Tosi
INAF-IAPS
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Diego Turrini
Istituto Nazionale de Astrofisica
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Francesca Zambon
INAF
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Abstract

The electromagnetic coupling between the Galilean satellites at Jupiter and the planetary ionosphere generates an auroral footprint, whose ultimate source is the relative velocity between the moons and the corotating magnetospheric plasma. The footprint can be detected in the infrared L band (3.3-3.6 microns) by the Jovian InfraRed Auroral Mapper (JIRAM) onboard the Juno spacecraft, which can observe the footprint position with high precision. Here, we report the JIRAM data acquired since August 27th 2016 until May 23rd 2022, corresponding to the first 42 orbits of Juno. The dataset is used to compute the average position of the footprint tracks of Io, Europa and Ganymede. The result of the present analysis can help to test the reliability of magnetic field models, to calibrate ground-based observations and to highlight episodes of variability in the footprint positions, which in turn can point out specific conditions of the Jovian magnetospheric environment.
12 May 2023Submitted to ESS Open Archive
13 May 2023Published in ESS Open Archive