{
  "abstract": "Energetic electrons dominate the energy precipitated into Jupiter's auroral regions, but protons precipitate along the same field lines, with a contribution that remains poorly constrained. We statistically compare the precipitating energy flux of protons and electrons in two of Jupiter's auroral sub-regions, the polar (PE) and main (ME) emission regions. We use Juno/JEDI data from PJ3 to PJ66. The magnetic footprint of the spacecraft, computed with the JRM33 and CON2020 field models, is assigned to one of the two sub-regions, and the precipitating energy flux of each species is obtained by integrating over the loss cone the mean differential intensity measured within it. In both sub-regions, the median proton energy flux is 52 to 223 times lower than that of the electrons, and the total precipitated proton power is less than 2% of the electron power. Proton fluxes are broadly distributed across the sub-regions, with higher values in the ME than in the PE. Protons play a secondary role in Jupiter's auroral energy budget, radiating an estimated 5 to 9 GW in the UV per sub-region, pending a dedicated proton transport modelling. Their Doppler signature in the red wing of the Lyman-$α$ line, undetected by HST and difficult to access with Juno/UVS, is a key observable for the upcoming Juice and Europa Clipper missions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.34758",
  "author_total": 11,
  "authors": [
    {
      "name": "B. Benmahi"
    },
    {
      "name": "N. André"
    },
    {
      "name": "V. Hue"
    },
    {
      "name": "Z. -Y. Liu"
    },
    {
      "name": "G. Gronoff"
    },
    {
      "name": "B. Mauk"
    },
    {
      "name": "B. Bonfond"
    },
    {
      "name": "T. Stallard"
    },
    {
      "name": "M. Blanc"
    },
    {
      "name": "M. Devinat"
    },
    {
      "name": "M. Barthélémy"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/955exhgf2n08f.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.34758",
  "fulltext_url": null,
  "id": "955exhgf2n08f",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.34758",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.EP"
    ],
    [
      "arxiv",
      "physics.space-ph"
    ],
    [
      "openalex",
      "3103|Ionosphere and magnetosphere dynamics"
    ]
  ],
  "openalex": "W7214745409",
  "pdf_url": "https://arxiv.org/pdf/2609.34758",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/955exhgf2n08f.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.34758",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.34758"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:physics.space-ph",
      "subfield": "stellar"
    }
  ],
  "title": "The precipitation of protons and electrons in Jupiter's auroral regions: a statistical comparison based on Juno/JEDI data",
  "title_text": "The precipitation of protons and electrons in Jupiter's auroral regions: a statistical comparison based on Juno/JEDI data",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/955exhgf2n08f",
  "venue": "arXiv",
  "versions": []
}