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Title: Electron Energization by Inertial Alfvén Waves in Density Depleted Flux Tubes at Jupiter

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2022gl102467· OSTI ID:1974426
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1]
  1. Univ. of Alaska, Fairbanks, AK (United States)
  2. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  3. Andrews Univ., Berrien Springs, MI (United States)
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Juno satellite observations have illustrated substantial examples of broadband electron energization up to 105–106 eV levels. In order to explain these observations, we use a hybrid gyrofluid kinetic-electron model in an untilted dipolar topology to illustrate energization to high levels in weak current conditions by inertial Alfvén waves close to the Jupiter ionosphere for ambient plasma densities and magnetic field perturbations inferred from Juno satellite observations. The key to the high energization is the extremely low densities evident in the observations which necessitates the acceleration of electrons to very high velocities in order to carry the field-aligned current.

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Aeronautics and Space Administration (NASA)
Grant/Contract Number:
AC02-09CH11466; 80NSSC19K0941; 80NSSC20K1279; 80NSSC19K0843; 80HQTR19T0076
OSTI ID:
1974426
Journal Information:
Geophysical Research Letters, Vol. 50, Issue 5; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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