Loss of energetic ions comprising the ring current populations of Jupiter's middle and inner magnetosphere
- 1. Johns Hopkins APL
- 2. Southwest Research Institute
- 3. University of Colorado, LASP
- 4. NASA GSFC
- 5. Niihama College, Japan
- 6. University of Iowa
- 7. European Space Agency, ESTEC
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Provided here are ASCII dumps of the processed data that appears in the figures of the subject paper. The enclosed files begin with a PDF of the paper that serves to identify, display, and document the figures in question. Below is the paper abstract.
Abstract: The low-altitude, polar orbit of the Juno mission allows the Jupiter Energetic Particle Detector Instrument (JEDI) to view into, and resolve, the loss cone of energetic ions comprising the low-altitude extension of Jupiter’s ring current ions. For regions mapping from just inside Ganymede’s orbit, to well beyond Ganymede’s orbit, energetic ions (> 50 keV H+ and >130 keV Oxygen and Sulfur ions) are strongly scattered into the loss cone, and lost to the magnetosphere, at the “strong diffusion limit” at essentially all times. We conclude, by arguing against magnetic curvature scattering, that the cause is waves, perhaps associated with Alfvénic variations previously documented in this equatorial region. Scattering is generally weak or non-existent near the orbits of the moons Europa and Io, except for the regions just downstream of the co-rotating plasmas. For Io, we sometimes observe moderate, but not saturated, scattering within roughly 60° downstream. Significantly, scattering is weak or non-existent just upstream of Io’s position, an asymmetry echoed in some previous wave observations. A preliminary accounting of the total (longitude-averaged) scattering losses near Io’s orbit yields loss rates of order 4% - 5% percent of the strong diffusion limit for H+, and 5%-7% for heavy ions (O+S). We conclude that near Io’s orbit, charge exchange losses likely dominate over scattering losses for heavy ions, and for the lower energy H+ ions (roughly <200 keV).
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Mauk_2021_Jupiter_RC_Losses_22Mar22.pdf
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Additional details
Related works
- Cites
- Journal article: 10.1029/2020JA027964 (DOI)
- Journal article: 10.1002/2016GL072286 (DOI)
- Journal article: 10.1029/2020JA027964 (DOI)
- Journal article: 10.1029/2020JA028697 (DOI)
- Journal article: 10.1029/2018JA025216 (DOI)