{
  "id": "1910.04512",
  "version": "v1",
  "published": "2019-10-10T12:31:45.000Z",
  "updated": "2019-10-10T12:31:45.000Z",
  "title": "GRB X-Ray Flare Properties among Different GRB Subclasses",
  "authors": [
    "Chuanxi Liu",
    "Jirong Mao"
  ],
  "comment": "ApJ accepted",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "Gamma-ray bursts (GRBs) can be divided into three subclasses: X-ray flash (XRF), X-ray rich (XRR), and classical GRB (C-GRB). An X-ray flare is the rebrightening emission shown in the early X-ray afterglow of some GRBs. In this paper, we comprehensively examine the X-ray flare properties among XRF, XRR, and C-GRB subclasses. We utilize the XRF, XRR, and C-GRB subclass samples obtained from the Swift-BAT3 catalog, and the X-ray flare observational properties are collected from Falcone et al., Chincarini et al., and Yi et al. We find that XRFs and XRRs have more bright X-ray flares than C-GRBs. The ratio of the X-ray flare fluence to the prompt emission fluence has different distributions between XRF and C-GRB subclasses. The linear correlation between the duration and the peak time of the X-ray flares is also different between XRF and C-GRB subclasses. We are inclined to identify the GRBs with the bright X-ray flares as XRFs or XRRs. We discuss some issues that are related to the XRF/XRR/C-GRB classification. We also caution the selection effects and the instrument bias in our investigation. Large samples are required in the future to further confirm our results.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-10-10T12:31:45.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "grb x-ray flare properties",
      "grb subclasses",
      "bright x-ray flares",
      "x-ray flare observational properties",
      "x-ray flare fluence"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}