A physical model of the proton radiation belts of Jupiter inside Europa’s orbit

Quentin Nénon; Angelica Sicard; Peter Kollmann; Henry B.  Garrett; Stephan P. A. Sauer; Chris Paranicas

doi:10.1029/2018ja025216

A physical model of the proton radiation belts of Jupiter inside Europa’s orbit

Quentin Nénon, Angelica Sicard, Peter Kollmann, Henry B. Garrett, Stephan P. A. Sauer, Chris Paranicas

Department of Chemistry

14 Citations (Scopus)

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Abstract

A physical model of the Jovian trapped protons with kinetic energies higher than 1 MeV inward of the orbit of the icy moon Europa is presented. The model, named Salammbô, takes into account the radial diffusion process, the absorption effect of the Jovian moons, and the Coulomb collisions and charge exchanges with the cold plasma and neutral populations of the inner Jovian magnetosphere. Preliminary modeling of the wave-particle interaction with Electromagnetic Ion Cyclotron (EMIC) waves near the moon Io is also performed. Salammbô is validated against in-situ proton measurements of Pioneer 10, Pioneer 11, Voyager 1, Galileo Probe, and Galileo Orbiter. A prominent feature of the MeV proton intensity distribution in the modeled area is the two orders of magnitude flux depletion observed in MeV measurements near the orbit of Io. Our simulations reveal that this is not due to direct interactions with the moon or its neutral environment but results from scattering of the protons by EMIC waves.

Original language	English
Journal	Journal of Geophysical Research: Space Physics
Volume	123
Issue number	5
Pages (from-to)	3512-3532
Number of pages	21
ISSN	2169-9380
DOIs	https://doi.org/10.1029/2018ja025216
Publication status	Published - May 2018

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title = "A physical model of the proton radiation belts of Jupiter inside Europa{\textquoteright}s orbit",

abstract = "A physical model of the Jovian trapped protons with kinetic energies higher than 1 MeV inward of the orbit of the icy moon Europa is presented. The model, named Salammb{\^o}, takes into account the radial diffusion process, the absorption effect of the Jovian moons, and the Coulomb collisions and charge exchanges with the cold plasma and neutral populations of the inner Jovian magnetosphere. Preliminary modeling of the wave-particle interaction with Electromagnetic Ion Cyclotron (EMIC) waves near the moon Io is also performed. Salammb{\^o} is validated against in-situ proton measurements of Pioneer 10, Pioneer 11, Voyager 1, Galileo Probe, and Galileo Orbiter. A prominent feature of the MeV proton intensity distribution in the modeled area is the two orders of magnitude flux depletion observed in MeV measurements near the orbit of Io. Our simulations reveal that this is not due to direct interactions with the moon or its neutral environment but results from scattering of the protons by EMIC waves.",

author = "Quentin N{\'e}non and Angelica Sicard and Peter Kollmann and Garrett, {Henry B.} and Sauer, {Stephan P. A.} and Chris Paranicas",

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month = may,

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language = "English",

volume = "123",

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journal = "Journal of Geophysical Research",

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TY - JOUR

T1 - A physical model of the proton radiation belts of Jupiter inside Europa’s orbit

AU - Nénon, Quentin

AU - Sicard, Angelica

AU - Kollmann, Peter

AU - Garrett, Henry B.

AU - Sauer, Stephan P. A.

AU - Paranicas, Chris

PY - 2018/5

Y1 - 2018/5

N2 - A physical model of the Jovian trapped protons with kinetic energies higher than 1 MeV inward of the orbit of the icy moon Europa is presented. The model, named Salammbô, takes into account the radial diffusion process, the absorption effect of the Jovian moons, and the Coulomb collisions and charge exchanges with the cold plasma and neutral populations of the inner Jovian magnetosphere. Preliminary modeling of the wave-particle interaction with Electromagnetic Ion Cyclotron (EMIC) waves near the moon Io is also performed. Salammbô is validated against in-situ proton measurements of Pioneer 10, Pioneer 11, Voyager 1, Galileo Probe, and Galileo Orbiter. A prominent feature of the MeV proton intensity distribution in the modeled area is the two orders of magnitude flux depletion observed in MeV measurements near the orbit of Io. Our simulations reveal that this is not due to direct interactions with the moon or its neutral environment but results from scattering of the protons by EMIC waves.

AB - A physical model of the Jovian trapped protons with kinetic energies higher than 1 MeV inward of the orbit of the icy moon Europa is presented. The model, named Salammbô, takes into account the radial diffusion process, the absorption effect of the Jovian moons, and the Coulomb collisions and charge exchanges with the cold plasma and neutral populations of the inner Jovian magnetosphere. Preliminary modeling of the wave-particle interaction with Electromagnetic Ion Cyclotron (EMIC) waves near the moon Io is also performed. Salammbô is validated against in-situ proton measurements of Pioneer 10, Pioneer 11, Voyager 1, Galileo Probe, and Galileo Orbiter. A prominent feature of the MeV proton intensity distribution in the modeled area is the two orders of magnitude flux depletion observed in MeV measurements near the orbit of Io. Our simulations reveal that this is not due to direct interactions with the moon or its neutral environment but results from scattering of the protons by EMIC waves.

U2 - 10.1029/2018ja025216

DO - 10.1029/2018ja025216

M3 - Journal article

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JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

IS - 5

ER -

A physical model of the proton radiation belts of Jupiter inside Europa’s orbit

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