{
  "abstract": "Recent observations have revealed that the Milky Way is embedded in a massive circumgalactic medium (CGM) extending to several hundred kpc. Such an extended gaseous halo acts as both a reservoir of baryons and potentially as a confinement volume for Galactic cosmic rays (CRs). We investigate CR transport in this giant Galactic halo and compare its properties with those of conventional small-halo models. In the giant-halo scenario, the halo height is no longer a free parameter, but instead relates to the extent of the source region. We show that CR transport within the source region remains similar to that in small-halo models, while substantial differences emerge at larger distances. In the giant-halo scenario, CRs develop an extended approximately 1/ r spatial tail and exhibit a broader age distribution than the small-halo case. This model is shown to be consistent with current secondary-to-primary CR measurements. We further find that uncertainties associated with Galactic gas distributions are comparable to those arising from nuclear spallation cross sections. These results suggest that the giant-halo model provides a physically motivated alternative to conventional small-halo models and may have important implications for diffuse gamma-ray and neutrino emission from the Galactic environment.",
  "abstract_shown": true,
  "affiliations": [
    "Deutsches Elektronen Synchrotron DESY"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Chao-Ming Li",
      "orcid": "0000-0002-9654-9123"
    },
    {
      "affs": [
        0
      ],
      "name": "Andrew M. Taylor",
      "orcid": "0000-0001-9473-4758"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/assxn2g0qxdzm.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aeaba1",
  "fulltext_url": null,
  "id": "assxn2g0qxdzm",
  "issns": [
    "1538-4357",
    "0004-637X"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeaba1",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "astronomy/general"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeaba1/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/assxn2g0qxdzm.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:16Z",
      "native_id": "10.3847/1538-4357/aeaba1",
      "source": "feed-iop",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeaba1"
    },
    {
      "first_seen": "2026-11-03T12:20:32Z",
      "native_id": "10.3847/1538-4357/aeaba1",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeaba1"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "journal-openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "Galactic Cosmic-Ray Transport in the Giant Circumgalactic Medium Halo",
  "title_text": "Galactic Cosmic-Ray Transport in the Giant Circumgalactic Medium Halo",
  "type": "peer-reviewed",
  "updated_at": "2026-11-05T00:20:44Z",
  "url": "https://research.draconitic.com/paper/assxn2g0qxdzm",
  "venue": "The Astrophysical Journal",
  "versions": []
}