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

Authors :
P. A. Damiano
P. A. Delamere
E.‐H. Kim
J. R. Johnson
C. S. Ng
Source :
Geophysical Research Letters, Vol 50, Iss 5, Pp n/a-n/a (2023)
Publication Year :
2023
Publisher :
Wiley, 2023.

Abstract

Abstract 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.

Details

Language :
English
ISSN :
19448007 and 00948276
Volume :
50
Issue :
5
Database :
Directory of Open Access Journals
Journal :
Geophysical Research Letters
Publication Type :
Academic Journal
Accession number :
edsdoj.6e537bd54cc04911aca8a604c6455e87
Document Type :
article
Full Text :
https://doi.org/10.1029/2022GL102467