{
  "id": "2205.08692",
  "version": "v1",
  "published": "2022-05-18T02:10:54.000Z",
  "updated": "2022-05-18T02:10:54.000Z",
  "title": "Constraints on annihilating dark matter in the Omega Centauri cluster",
  "authors": [
    "Man Ho Chan",
    "Chak Man Lee"
  ],
  "comment": "Accepted in Phys. Rev. D",
  "categories": [
    "astro-ph.GA",
    "hep-ph",
    "hep-th"
  ],
  "abstract": "Recent gamma-ray and radio studies have obtained some stringent constraints on annihilating dark matter properties. However, only a few studies have focussed on using X-ray data to constrain annihilating dark matter. In this article, we perform the X-ray analysis of annihilating dark matter using the data of the Omega Centauri cluster. If dark matter is the correct interpretation of the non-luminous mass component derived in the Omega Centauri cluster, the conservative lower limits of thermal dark matter mass annihilating via the $\\tau^+\\tau^-$, $b\\bar{b}$ and $W^+W^-$ channels can be significantly improved to 104(43) GeV, 650(167) GeV and 480(137) GeV respectively, assuming the diffusion coefficient $D_0 \\le 10^{26}(10^{27})$ cm$^2$/s. These constraints can safely rule out the recent claims of dark matter interpretation of the gamma-ray excess and anti-proton excess seen in our Galaxy. Generally speaking, the conservative lower limits obtained for non-leptophilic annihilation channels are much more stringent than that obtained by gamma-ray analysis of nearby dwarf galaxies. We anticipate that this would open a new window for constraining annihilating dark matter.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-05-18T02:10:54.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "annihilating dark matter",
      "omega centauri cluster",
      "constraints",
      "dark matter mass annihilating",
      "conservative lower limits"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}