{
  "id": "2307.13023",
  "version": "v1",
  "published": "2023-07-24T18:00:00.000Z",
  "updated": "2023-07-24T18:00:00.000Z",
  "title": "Limits on dark matter annihilation in prompt cusps from the isotropic gamma-ray background",
  "authors": [
    "M. Sten Delos",
    "Michael Korsmeier",
    "Axel Widmark",
    "Carlos Blanco",
    "Tim Linden",
    "Simon D. M. White"
  ],
  "comment": "11 pages, 10 figures",
  "categories": [
    "astro-ph.HE",
    "astro-ph.CO",
    "hep-ph"
  ],
  "abstract": "Recent studies indicate that thermally produced dark matter will form highly concentrated, low-mass cusps in the early universe that often survive until the present. While these cusps contain a small fraction of the dark matter, their high density significantly increases the expected gamma-ray flux from dark matter annihilation, particularly in searches of large angular regions. We utilize 14 years of Fermi-LAT data to set strong constraints on dark matter annihilation through a detailed study of the isotropic gamma-ray background, excluding with 95% confidence dark matter annihilation to $b\\bar{b}$ final states for dark matter masses below 120 GeV.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-07-24T18:00:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "isotropic gamma-ray background",
      "prompt cusps",
      "confidence dark matter annihilation",
      "large angular regions",
      "set strong constraints"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}