{
  "bibcode": "2022GCN.32808....1A",
  "body": "Y. Aimuratov, L. Becerra, C.L. Bianco, C. Cherubini, S. Filippi, M.\nKarlica, Liang Li, R. Moradi, F. Rastegar Nia, J.A. Rueda, R. Ruffini, N.\nSahakyan, Y. Wang, S.S. Xue, on behalf of the ICRANet team, report:\n\nGRB 221009A appears to be a rare example (Jean-Luc Atteia et al. 2022, GCN\n32793) of a particularly energetic and close GRB (de Ugarte Postigo et al.\n2022, GCN 32648 and Lesage et al. 2022, GCN 32642 and N.P.M. Kuin et al.\n2022, GCN 32656). Within the BdHN model, we have followed the X-ray,\noptical, and radio afterglows originating from synchrotron emission powered\nby fast spinning newborn neutron stars (vNS) with initial periods of\nfraction of a millisecond, accreting the supernova ejecta, created by the\ncollapse of a carbon-oxygen core (Rueda et al. 2022, arXiv:2204.00579).\nFigures 1, 2 and 3 show the afterglows of three type I BdHNe, namely GRB\n180720B (Ruffini et al. 2018, GCN 23019), GRB 190114C (Ruffini et al. 2019,\nGCN 23715), and GRB 211023A (Aimuratov et al. 2021, GCN 31056), and the\nprediction of their associated supernova.\nWe have indicated the expected time of the occurrence of the supernova in\nGRB 221009A (Aimuratov et al. 2022, GCN 32780). The ongoing observations in\noptical, radio, and X-ray bands are strongly recommended for allowing the\ndetermination of the spin and magnetic field of the vNS. This will probe as\nwell if the optical synchrotron emission, at ~ 10^6 s from the Fermi-GBM\ntrigger, impedes the observations of the optical emission of the supernova\noriginating from nickel decay (Aimuratov et al. in preparation, see also\ndata from Ilfan Bikmaev et al. 2022, GCN 32752, and Jia. Ren et al. 2022,\narXiv:2210.10673, reproduced in Fig. 4).\n\nFig1: http://www.icranet.org/docs/Fig1.pdf\nFig2: http://www.icranet.org/docs/Fig2.pdf\nFig3: http://www.icranet.org/docs/Fig3.pdf\nFig4: http://www.icranet.org/docs/Fig4.pdf",
  "circularId": 32808,
  "createdOn": 1666277867000,
  "email": "ruffini@icra.it",
  "subject": "GRB 221009A: Peak luminosity of the supernova vs. synchrotron afterglow",
  "submitter": "Remo Rufinni at ICRA  <ruffini@icra.it>",
  "eventId": "GRB 221009A"
}