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    "story_id": "mp-2026-10-26-018",
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    "headline": "A Simulated Galaxy Produces Excesses Larger Than Fermi's",
    "slug": "a-simulated-galaxy-produces-excesses-larger-than-fermi-s",
    "dek": "Time-dependent cosmic-ray transport created transient gamma-ray residuals whose spectrum and shape sometimes resembled the Galactic Center excess.",
    "summary": "Time-dependent cosmic-ray transport created transient gamma-ray residuals whose spectrum and shape sometimes resembled the Galactic Center excess.",
    "body_text": "The authors argue the excess may reflect a look-elsewhere fluctuation in diffuse stellar-source emission and call for time-dependent templates. Simulated resemblance does not rule out dark matter or unresolved pulsars.",
    "why_it_matters": "Time-dependent cosmic-ray transport created transient gamma-ray residuals whose spectrum and shape sometimes resembled the Galactic Center excess.",
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      "Simulated resemblance does not rule out dark matter or unresolved pulsars."
    ],
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    "first_published_at": "2026-10-26T09:00:00.000-04:00",
    "modified_at": "2026-10-26T09:00:00.000-04:00",
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        "qualification": "Simulated resemblance does not rule out dark matter or unresolved pulsars."
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    "source_ids": [
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    "tags": [
      "gamma rays",
      "cosmic rays",
      "Milky Way",
      "dark matter"
    ],
    "image_url": null,
    "corrections": []
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  "sources": [
    {
      "source_id": "source-2026-10-26-020",
      "title": "arXiv preprint 2610.32845, original v1",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2610.32845v1",
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      "published_at": "2026-10-23T12:19:38.000-04:00",
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    "title": "A Simulated Galaxy Produces Excesses Larger Than Fermi's",
    "publisher": "The Machine Press",
    "published_at": "2026-10-26T09:00:00.000-04:00",
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