Io's Effect on Energetic Charged Particles as Seen in Juno Data

C. Paranicas; B. H. Mauk; D. K. Haggerty; G. Clark; P. Kollmann; A. M. Rymer; J. Westlake; R. C. Allen; J. Szalay; R. W. Ebert; A. H. Sulaiman; M. Imai; E. Roussos; N. Krupp; Q. Nénon; F. Bagenal; S. J. Bolton

doi:10.1029/2019GL085393

Io's Effect on Energetic Charged Particles as Seen in Juno Data

C. Paranicas, B. H. Mauk, D. K. Haggerty, G. Clark, P. Kollmann, A. M. Rymer, J. Westlake, R. C. Allen, J. Szalay, R. W. Ebert, A. H. Sulaiman, M. Imai, E. Roussos, N. Krupp, Q. Nénon, F. Bagenal, S. J. Bolton

Astrophysical Sciences

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17 Scopus citations

Abstract

On 12 February 2019, the Juno spacecraft crossed the particle drift shells (L shells) of the moon Io. The energetic particle detector, Jupiter Energetic Particle Detector Instrument (JEDI), found very low fluxes of energetic protons when the spacecraft was inward of about L~6.5. Recent modeling suggests wave-particle interactions may explain why energetic proton fluxes measured at these radial distances are low. JEDI also measured both a wide and a narrow decrease in the energetic electron count rate in Io's wake. At the time of this decrease, the JEDI detectors were dominated by 0.42 to 10-MeV electrons. The dimensions of the narrow count rate decrease are about three Io diameters and are unlikely to be caused by absorption by moon itself.

Original language	English (US)
Pages (from-to)	13615-13620
Number of pages	6
Journal	Geophysical Research Letters
Volume	46
Issue number	23
DOIs	https://doi.org/10.1029/2019GL085393
State	Published - Dec 16 2019

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

Keywords

energetic charged particles
Io
Juno

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10.1029/2019GL085393

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Paranicas, C., Mauk, B. H., Haggerty, D. K., Clark, G., Kollmann, P., Rymer, A. M., Westlake, J., Allen, R. C., Szalay, J., Ebert, R. W., Sulaiman, A. H., Imai, M., Roussos, E., Krupp, N., Nénon, Q., Bagenal, F., & Bolton, S. J. (2019). Io's Effect on Energetic Charged Particles as Seen in Juno Data. Geophysical Research Letters, 46(23), 13615-13620. https://doi.org/10.1029/2019GL085393

@article{c57bb8f9373e4baa830358794057cbad,

title = "Io's Effect on Energetic Charged Particles as Seen in Juno Data",

abstract = "On 12 February 2019, the Juno spacecraft crossed the particle drift shells (L shells) of the moon Io. The energetic particle detector, Jupiter Energetic Particle Detector Instrument (JEDI), found very low fluxes of energetic protons when the spacecraft was inward of about L~6.5. Recent modeling suggests wave-particle interactions may explain why energetic proton fluxes measured at these radial distances are low. JEDI also measured both a wide and a narrow decrease in the energetic electron count rate in Io's wake. At the time of this decrease, the JEDI detectors were dominated by 0.42 to 10-MeV electrons. The dimensions of the narrow count rate decrease are about three Io diameters and are unlikely to be caused by absorption by moon itself.",

keywords = "energetic charged particles, Io, Juno",

author = "C. Paranicas and Mauk, {B. H.} and Haggerty, {D. K.} and G. Clark and P. Kollmann and Rymer, {A. M.} and J. Westlake and Allen, {R. C.} and J. Szalay and Ebert, {R. W.} and Sulaiman, {A. H.} and M. Imai and E. Roussos and N. Krupp and Q. N{\'e}non and F. Bagenal and Bolton, {S. J.}",

note = "Publisher Copyright: {\textcopyright}2019. The Authors.",

year = "2019",

month = dec,

day = "16",

doi = "10.1029/2019GL085393",

language = "English (US)",

volume = "46",

pages = "13615--13620",

journal = "Geophysical Research Letters",

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Paranicas, C, Mauk, BH, Haggerty, DK, Clark, G, Kollmann, P, Rymer, AM, Westlake, J, Allen, RC, Szalay, J, Ebert, RW, Sulaiman, AH, Imai, M, Roussos, E, Krupp, N, Nénon, Q, Bagenal, F & Bolton, SJ 2019, 'Io's Effect on Energetic Charged Particles as Seen in Juno Data', Geophysical Research Letters, vol. 46, no. 23, pp. 13615-13620. https://doi.org/10.1029/2019GL085393

TY - JOUR

T1 - Io's Effect on Energetic Charged Particles as Seen in Juno Data

AU - Paranicas, C.

AU - Mauk, B. H.

AU - Haggerty, D. K.

AU - Clark, G.

AU - Kollmann, P.

AU - Rymer, A. M.

AU - Westlake, J.

AU - Allen, R. C.

AU - Szalay, J.

AU - Ebert, R. W.

AU - Sulaiman, A. H.

AU - Imai, M.

AU - Roussos, E.

AU - Krupp, N.

AU - Nénon, Q.

AU - Bagenal, F.

AU - Bolton, S. J.

PY - 2019/12/16

Y1 - 2019/12/16

N2 - On 12 February 2019, the Juno spacecraft crossed the particle drift shells (L shells) of the moon Io. The energetic particle detector, Jupiter Energetic Particle Detector Instrument (JEDI), found very low fluxes of energetic protons when the spacecraft was inward of about L~6.5. Recent modeling suggests wave-particle interactions may explain why energetic proton fluxes measured at these radial distances are low. JEDI also measured both a wide and a narrow decrease in the energetic electron count rate in Io's wake. At the time of this decrease, the JEDI detectors were dominated by 0.42 to 10-MeV electrons. The dimensions of the narrow count rate decrease are about three Io diameters and are unlikely to be caused by absorption by moon itself.

AB - On 12 February 2019, the Juno spacecraft crossed the particle drift shells (L shells) of the moon Io. The energetic particle detector, Jupiter Energetic Particle Detector Instrument (JEDI), found very low fluxes of energetic protons when the spacecraft was inward of about L~6.5. Recent modeling suggests wave-particle interactions may explain why energetic proton fluxes measured at these radial distances are low. JEDI also measured both a wide and a narrow decrease in the energetic electron count rate in Io's wake. At the time of this decrease, the JEDI detectors were dominated by 0.42 to 10-MeV electrons. The dimensions of the narrow count rate decrease are about three Io diameters and are unlikely to be caused by absorption by moon itself.

KW - energetic charged particles

KW - Io

KW - Juno

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DO - 10.1029/2019GL085393

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EP - 13620

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 23

ER -

Io's Effect on Energetic Charged Particles as Seen in Juno Data

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