{
  "id": "2403.12524",
  "version": "v1",
  "published": "2024-03-19T07:52:32.000Z",
  "updated": "2024-03-19T07:52:32.000Z",
  "title": "Search for GeV gamma-ray emission from the possible TeV-bright red dwarfs with Fermi-LAT",
  "authors": [
    "Chen Huang",
    "Xiao Zhang",
    "Yang Chen",
    "Wen-Juan Zhong"
  ],
  "comment": "11 pages, 6 figures",
  "categories": [
    "astro-ph.HE",
    "astro-ph.SR"
  ],
  "abstract": "Red dwarfs have been suggested to be among the possible astrophysical species accelerating particles and emitting TeV $\\gamma$-rays. As an effort to search for the GeV $\\gamma$-ray counterparts of the suggested TeV emission from eight red dwarfs, we analyse the 0.2--500 GeV $\\gamma$-ray emission of the regions covering them exploiting the $\\sim$13.6 yr Pass 8 data of the Fermi Large Area Telescope. A GeV $\\gamma$-ray emission excess with significance of 3.8$\\sigma$ is detected in the direction of the red dwarf V962 Tau. This emission contains V962 Tau in 1$\\sigma$ error radius and is independent of the catalog source. However, the stellar flare scenario can hardly explain the total energy and lightcurve derived from the $\\gamma$-ray emission in view of the spectral analysis. We also analyse the lightcurves in the positions of the eight red dwarfs and no time bin with significance $>$5$\\sigma$ is found. Therefore, no significant emission from the red dwarfs could be concluded to be detected by Fermi-LAT.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-03-19T07:52:32.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gev gamma-ray emission",
      "tev-bright red dwarfs",
      "emission contains v962 tau",
      "fermi large area telescope",
      "ray emission excess"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}