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. H. 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. H. 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

Astrophysical Sciences

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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 moon with their associated auroral emission. Its 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 (US)
Article number	e2021GL096994
Journal	Geophysical Research Letters
Volume	49
Issue number	7
DOIs	https://doi.org/10.1029/2021GL096994
State	Published - Apr 16 2022

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

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10.1029/2021GL096994

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Hue, V., Szalay, J. R., Greathouse, T. K., Bonfond, B., Kotsiaros, S., Louis, C. K., Sulaiman, A. H., 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(7), 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'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 moon with their associated auroral emission. Its 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.",

author = "V. Hue and Szalay, {J. R.} and Greathouse, {T. K.} and B. Bonfond and S. Kotsiaros and Louis, {C. K.} and Sulaiman, {A. H.} 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 Connerney, {J. E.P.} and Davis, {M. W.} and Ebert, {R. W.} and G{\'e}rard, {J. C.} 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",

month = apr,

day = "16",

doi = "10.1029/2021GL096994",

language = "English (US)",

volume = "49",

journal = "Geophysical Research Letters",

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Hue, V, Szalay, JR, Greathouse, TK, Bonfond, B, Kotsiaros, S, Louis, CK, Sulaiman, AH, 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, no. 7, 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. H.

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 - 2022/4/16

Y1 - 2022/4/16

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 moon with their associated auroral emission. Its 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 moon with their associated auroral emission. Its 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.

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DO - 10.1029/2021GL096994

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JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 7

M1 - e2021GL096994

ER -

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

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