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

Authors

P. A. Damiano, University of Alaska FairbanksFollow
P. A. Delamere, University of Alaska FairbanksFollow
E.-H. Kim, Princeton Plasma Physics LaboratoryFollow
J. R. Johnson, Andrews UniversityFollow
C. S. Ng, University of Alaska FairbanksFollow

Document Type

Article

Publication Date

2-24-2023

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.

Journal Title

Geophysical Research Letters

Volume

50

Issue

5

ISBN

ISSN 1944-8007

DOI

https://doi.org/10.1029/2022GL102467

First Department

Engineering

Recommended Citation

Damiano, P. A.; Delamere, P. A.; Kim, E.-H.; Johnson, J. R.; and Ng, C. S., "Electron Energization by Inertial Alfvén Waves in Density Depleted Flux Tubes at Jupiter" (2023). Faculty Publications. 4651.
https://digitalcommons.andrews.edu/pubs/4651

Acknowledgements

Open access article retrieved 8/18/23 from: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022GL102467