{
  "id": "2107.03800",
  "version": "v1",
  "published": "2021-07-08T12:17:28.000Z",
  "updated": "2021-07-08T12:17:28.000Z",
  "title": "Periodicity Search on X-ray Bursts of SGR J1935+2154 Using 8.5-year Fermi/GBM Data",
  "authors": [
    "Jin-Hang Zou",
    "Bin-Bin Zhang",
    "Guo-Qiang Zhang",
    "Yu-Han Yang",
    "Fa-Yin Wang",
    "Lang Shao"
  ],
  "comment": "13 pages, 8 figures, 2 tables",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We performed a systematic search for X-ray bursts of the SGR J1935+2154 using the Fermi Gamma-ray Burst Monitor continuous data dated from Jan 2013 to July 2021. Seven major bursting phases, which consist of a total of 253 individual bursts, are identified. We further analyze the periodic properties of our sample using the Lomb-Scargle spectrum and a novel model (named \"Simple Period Model\") developed by ourselves. Two methods yield the same results in that those bursts exhibit a period of ~237 days with a ~58.6% duty cycle. Based on our analysis, we further predict two upcoming active windows of the X-ray bursts. As of July 7th, 2021, the beginning date of our first perdition has been confirmed by the ongoing X-ray activities of the SGR J1935+2154.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-07-08T12:17:28.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "x-ray bursts",
      "fermi/gbm data",
      "periodicity search",
      "gamma-ray burst monitor continuous data",
      "fermi gamma-ray burst monitor continuous"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}