Acceleration of Energetic Electrons in Jovian Middle Magnetosphere by Whistler‐Mode Waves
Hao, Y.‐X. 
ORCID: https://orcid.org/0000-0003-0425-3358; Shprits, Y. Y. ORCID: https://orcid.org/0000-0002-9625-0834; Menietti, J. D.; Averkamp, T. ORCID: https://orcid.org/0000-0001-6977-3472; Wang, D. D. ORCID: https://orcid.org/0000-0002-4213-4037; Kollmann, P. ORCID: https://orcid.org/0000-0002-4274-9760; Hospodarsky, G. B. ORCID: https://orcid.org/0000-0001-9200-9878; Drozdov, A. ORCID: https://orcid.org/0000-0002-5334-2026; Saikin, A.; Roussos, E. ORCID: https://orcid.org/0000-0002-5699-0678; Krupp, N. ORCID: https://orcid.org/0000-0003-4683-9533; Horne, R. B. ORCID: https://orcid.org/0000-0002-0412-6407; Woodfield, E. E. ORCID: https://orcid.org/0000-0002-0531-8814; Bolton, S. J. ORCID: https://orcid.org/0000-0002-9115-0789.
2024
Acceleration of Energetic Electrons in Jovian Middle Magnetosphere by Whistler‐Mode Waves.
Journal of Geophysical Research: Space Physics, 129 (12), e2024JA032735.
13, pp.
10.1029/2024JA032735
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©2024. The Author(s).This is an open access article under the terms of the Creative Commons Attribution License, which permits use,distribution and reproduction in any medium, provided the original work is properly cited. JGR Space Physics - 2024 - Hao - Acceleration of Energetic Electrons in Jovian Middle Magnetosphere by Whistler‐Mode Waves.pdf - Published Version Available under License Creative Commons Attribution 4.0. Download (3MB) | Preview |
Abstract/Summary
An abundant multi-MeV electron population beyond the orbit of Io is required to explain the intense inner radiation belt (electrons >50 MeV) at Jupiter and its synchrotron radiation. In order to better understand the synergistic effect of radial transport and local wave-particle interactions driven by whistler-mode waves on the formation of Jupiter's radiation belt, we perform 3-D Fokker-Planck simulations for Jovian energetic electrons with the Versatile Electron Radiation Belt code. An empirical model of Jovian whistler-mode waves updated with measurements from the Juno extended mission is used to quantify the local acceleration and pitch angle scattering. Resonant cyclotron acceleration by whistler-mode waves leads to significant enhancement in the intensity of electrons above 1 MeV in the middle magnetosphere. Radial diffusion is capable of transporting MeV electrons accelerated by outer-belt whistler-mode waves into the M < 10 region, where they are further accelerated adiabatically to energies of about 10 MeV.
| Item Type: | Publication - Article |
|---|---|
| Digital Object Identifier (DOI): | 10.1029/2024JA032735 |
| ISSN: | 2169-9380 |
| Additional Keywords: | Fokker-Planck equation; Jupiter; particle acceleration; radiation belt; wave-particle interaction; whistler-mode waves |
| Date made live: | 09 Dec 2024 11:25 +0 (UTC) |
| URI: | https://nora.nerc.ac.uk/id/eprint/538527 |
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