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

V. Hue; J. R. Szalay; T. K. Greathouse; B. Bonfond; S. Kotsiaros; C. K. Louis; A. Sulaiman; G. Clark; F. Allegrini; G. R. Gladstone; C. Paranicas; M. H. Versteeg; A. Mura; A. Moirano; D. J. Gershman; S. J. Bolton; J.E.P. Connerney; M. W. Davis; R. W. Ebert; J.‐C. Gérard; R. S. Giles; D. C. Grodent; M. Imai; J. A. Kammer; W. S. Kurth; L. Lamy; B. H. Mauk

doi:10.1029/2021GL096994

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

V. Hue^*, J. R. Szalay, T. K. Greathouse, B. Bonfond, S. Kotsiaros, C. K. Louis, A. Sulaiman, G. Clark, F. Allegrini, G. R. Gladstone, C. Paranicas, M. H. Versteeg, A. Mura, A. Moirano, D. J. Gershman, S. J. Bolton, J.E.P. Connerney, M. W. Davis, R. W. Ebert, J.‐C. GérardR. S. Giles, D. C. Grodent, M. Imai, J. A. Kammer, W. S. Kurth, L. Lamy, B. H. Mauk

^*Corresponding author for this work

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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.

Original language	English
Article number	e2021GL096994
Journal	Geophysical Research Letters
Volume	49
Number of pages	11
ISSN	0094-8276
DOIs	https://doi.org/10.1029/2021GL096994
Publication status	Published - 2022

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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., ... Mauk, B. H. (2022). A Comprehensive Set of Juno In Situ and Remote Sensing Observations of the Ganymede Auroral Footprint. Geophysical Research Letters, 49, Article e2021GL096994. https://doi.org/10.1029/2021GL096994

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title = "A Comprehensive Set of Juno In Situ and Remote Sensing Observations of the Ganymede Auroral Footprint",

abstract = "Jupiter{\textquoteright}s satellite auroral footprints are a manifestation of the satellite-magnetosphere interaction of the Galilean moons. Juno{\textquoteright}s polar elliptical orbit enables crossing the magnetic flux tubes connecting each Galilean moons with their associated auroral emission. Juno{\textquoteright}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{\textquoteright}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.",

author = "V. Hue and Szalay, {J. R.} and Greathouse, {T. K.} and B. Bonfond and S. Kotsiaros and Louis, {C. K.} and A. Sulaiman and G. Clark and F. Allegrini and Gladstone, {G. R.} and C. Paranicas and Versteeg, {M. H.} and A. Mura and A. Moirano and Gershman, {D. J.} and Bolton, {S. J.} and J.E.P. Connerney and Davis, {M. W.} and Ebert, {R. W.} and J.‐C. G{\'e}rard and Giles, {R. S.} and Grodent, {D. C.} and M. Imai and Kammer, {J. A.} and Kurth, {W. S.} and L. Lamy and Mauk, {B. H.}",

year = "2022",

doi = "10.1029/2021GL096994",

language = "English",

volume = "49",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "Wiley-Blackwell",

}

Hue, V, Szalay, JR, Greathouse, TK, Bonfond, B, Kotsiaros, S, Louis, CK, Sulaiman, A, Clark, G, Allegrini, F, Gladstone, GR, Paranicas, C, Versteeg, MH, Mura, A, Moirano, A, Gershman, DJ, Bolton, SJ, Connerney, JEP, Davis, MW, Ebert, RW, Gérard, JC, Giles, RS, Grodent, DC, Imai, M, Kammer, JA, Kurth, WS, Lamy, L & Mauk, BH 2022, 'A Comprehensive Set of Juno In Situ and Remote Sensing Observations of the Ganymede Auroral Footprint', Geophysical Research Letters, vol. 49, e2021GL096994. https://doi.org/10.1029/2021GL096994

TY - JOUR

T1 - A Comprehensive Set of Juno In Situ and Remote Sensing Observations of the Ganymede Auroral Footprint

AU - Hue, V.

AU - Szalay, J. R.

AU - Greathouse, T. K.

AU - Bonfond, B.

AU - Kotsiaros, S.

AU - Louis, C. K.

AU - Sulaiman, A.

AU - Clark, G.

AU - Allegrini, F.

AU - Gladstone, G. R.

AU - Paranicas, C.

AU - Versteeg, M. H.

AU - Mura, A.

AU - Moirano, A.

AU - Gershman, D. J.

AU - Bolton, S. J.

AU - Connerney, J.E.P.

AU - Davis, M. W.

AU - Ebert, R. W.

AU - Gérard, J.‐C.

AU - Giles, R. S.

AU - Grodent, D. C.

AU - Imai, M.

AU - Kammer, J. A.

AU - Kurth, W. S.

AU - Lamy, L.

AU - Mauk, B. H.

PY - 2022

Y1 - 2022

N2 - 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.

AB - 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.

U2 - 10.1029/2021GL096994

DO - 10.1029/2021GL096994

M3 - Journal article

SN - 0094-8276

VL - 49

JO - Geophysical Research Letters

JF - Geophysical Research Letters

M1 - e2021GL096994

ER -

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

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