{
  "id": "2004.05514",
  "version": "v1",
  "published": "2020-04-12T00:54:00.000Z",
  "updated": "2020-04-12T00:54:00.000Z",
  "title": "GRB 111209A/SN 2011kl: Collapse of a supramassive magnetar with r-mode oscillation and fall-back accretion onto a newborn black hole",
  "authors": [
    "Jie Lin",
    "Rui-Jing Lu",
    "Da-Bin Lin",
    "Xiang-Gao Wang"
  ],
  "comment": "15 pages, 3 figures. To be accepted for publication in ApJ",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "Ultra-long-duration gamma-ray burst GRB 111209A was found to be associated with a very luminous supernovae (SNe) SN 2011kl. The physics of GRB 111209A/SN 2011kl has been extensively studied in the literures, but does not settle down yet. By investigating in detail the characteristics of the X-ray light curve of GRB 111209A, coupled with the temporal and spectral features observed in SN 2011kl, we argue that a short-living supramassive magnetar can be responsible for the initial shallow X-ray emission. Then the electromagnetic extraction of spin energy from a black hole results in the steeply declining X-ray flux when the magnetar collapses into a black hole (BH). A fraction of the envelope materials falls back and activates the accretion onto the newborn BH, which produces the X-ray rebrightening bump at late times. During this process, a centrifugally driven baryon-rich quasi-isotropic Blandford \\& Payne outflow from the revived accretion disk deposits its kinetic energy on the SN ejecta, which powers luminous SN 2011kl. Finally, we place a limitation on the magnetar's physical parameters based on the observations.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-04-12T00:54:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "grb 111209a/sn 2011kl",
      "newborn black hole",
      "supramassive magnetar",
      "r-mode oscillation",
      "driven baryon-rich quasi-isotropic blandford"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 15,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}