Journal article
Acceleration of Energetic Electrons in Jovian Middle Magnetosphere by Whistler-Mode Waves
Journal of geophysical research. Space physics, Vol.129(12), e2024JA032735
12/01/2024
DOI: 10.1029/2024JA032735
Abstract
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.
Details
- Title: Subtitle
- Acceleration of Energetic Electrons in Jovian Middle Magnetosphere by Whistler-Mode Waves
- Creators
- Y. -x. Hao - Helmholtz Centre Potsdam - GFZ German Research Centre for GeosciencesY. Y. Shprits - Helmholtz Centre Potsdam - GFZ German Research Centre for GeosciencesJ. D. Menietti - University of IowaT. Averkamp - University of IowaD. D. Wang - Helmholtz Centre Potsdam - GFZ German Research Centre for GeosciencesP. Kollmann - Johns Hopkins University Applied Physics LaboratoryG. B. Hospodarsky - University of IowaA. Drozdov - University of California, Los AngelesA. Saikin - University of California, Los AngelesE. Roussos - Max Planck Institute for Solar System ResearchN. Krupp - Max Planck Institute for Solar System ResearchR. B. Horne - British Antarctic SurveyE. E. Woodfield - British Antarctic SurveyS. J. Bolton - Southwest Research Institute
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.129(12), e2024JA032735
- Publisher
- Amer Geophysical Union
- DOI
- 10.1029/2024JA032735
- ISSN
- 2169-9380
- eISSN
- 2169-9402
- Number of pages
- 13
- Grant note
- National Aeronautics and Space Administration; National Aeronautics & Space Administration (NASA) STFC (Science and Technology Facilities Council, UK) Grant ST/W00111X/1 / Juno Participating Scientist Program 80NSSC19K1262 / NASA Survey of Jovian Plasma Wave Intensity and Diffusive Modeling of Electron Acceleration
- Language
- English
- Date published
- 12/01/2024
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984757687302771
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