{
  "id": "2105.05508",
  "version": "v2",
  "published": "2021-05-12T08:32:52.000Z",
  "updated": "2021-06-19T18:25:06.000Z",
  "title": "ALMA Host galaxy observation of the off-axis Gamma-Ray Burst XRF020903",
  "authors": [
    "Jheng-Cyun Chen",
    "Yuji Urata",
    "Kuiyun Huang"
  ],
  "comment": "14 pages, 9 figures, 1 tables, ApJ in press",
  "categories": [
    "astro-ph.HE",
    "astro-ph.GA"
  ],
  "abstract": "We investigated the radio properties of the host galaxy of X-ray flash, XRF020903, which is the best example for investigating of the off-axis origin of gamma-ray bursts(GRBs). Dust continuum at 233 GHz and CO are observed using the Atacama Large millimeter/submillimeter array. The molecular gas mass derived by applying the metalicity-dependent CO-to-H$_{2}$ conversion factor matches the global trend along the redshift and stellar mass of the GRB host galaxies. The estimated gas depletion timescale (pertaining to the potential critical characteristics of GRB host galaxies) is equivalent to those of GRBs and super-luminous supernova hosts in the same redshift range. These properties of the XRF020903 host galaxy observed in radio resemble those of GRB host galaxies, thereby supporting the identical origin of XRF020903 and GRBs.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2021-06-19T18:25:06.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "alma host galaxy observation",
      "off-axis gamma-ray burst xrf020903",
      "grb host galaxies",
      "atacama large millimeter/submillimeter array",
      "conversion factor matches"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}