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  A source of very energetic oxygen located in Jupiter’s inner radiation belts

Roussos, E., Cohen, C., Kollmann, P., Pinto, M., Krupp, N., Gonçalves, P., et al. (2022). A source of very energetic oxygen located in Jupiter’s inner radiation belts. Science Advances, 8(2): eabm4234. doi:10.1126/sciadv.abm4234.

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Genre: Journal Article

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 Creators:
Roussos, Elias1, Author              
Cohen, Christina, Author
Kollmann, Peter, Author
Pinto, Marco, Author
Krupp, Norbert1, Author              
Gonçalves, Patricia, Author
Dialynas, Konstantinos, Author
Affiliations:
1Planetary Science Department, Max Planck Institute for Solar System Research, Max Planck Society, Justus-von-Liebig-Weg 3, 37077 Göttingen, DE, ou_1832288              

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 Abstract: Jupiter hosts the most hazardous radiation belts of our solar system that, besides electrons and protons, trap an undetermined mix of heavy ions. The details of this mix are critical to resolve because they can reveal the role of Jupiter’s moons relative to other less explored energetic ion sources. Here, we show that with increasing energy and in the vicinity of Jupiter’s moon Amalthea, the belts’ ion composition transitions from sulfur- to oxygen-dominated due to a local source of ≳50 MeV/nucleon oxygen. Contrary to Earth’s and Saturn’s radiation belts, where their most energetic ions are supplied through atmospheric and ring interactions with externally accelerated cosmic rays, Jupiter’s magnetosphere powers this oxygen source internally. The underlying source mechanism, involving either Jovian ring spallation by magnetospheric sulfur or stochastic oxygen heating by low-frequency plasma waves, puts Jupiter’s ion radiation belt in the same league with that of astrophysical particle accelerators.

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Language(s): eng - English
 Dates: 2022
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1126/sciadv.abm4234
 Degree: -

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Title: Science Advances
  Other : Sci. Adv.
Source Genre: Journal
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Publ. Info: Washington : AAAS
Pages: - Volume / Issue: 8 (2) Sequence Number: eabm4234 Start / End Page: - Identifier: ISSN: 2375-2548
CoNE: https://pure.mpg.de/cone/journals/resource/2375-2548