{
  "bibcode": "2015GCN.17725....1S",
  "body": "B. Sbarufatti (INAF-OAB/PSU), L. Hagen (PSU) report on behalf of the Swift team\n\nSwift performed a follow up observation of GRB 150418A, with a pointing  in the direction of Source #1 reported by Sbarufatti et al. (GCN Circ. 17722).\nIn 3.7 ks of exposure we don���t detect any X-ray source down to a 3-sigma upper limit of 9.8 E-3 counts/s in the position of Source 1.\nWe note that this new observation and the original one are both affected by a higher than usual background, which may have led to spurious detections of background fluctuations as Sources #1 and #2.\n\nNo further Swift observations of this field are planned.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 17725,
  "createdOn": 1429551558000,
  "email": "boris.sbarufatti@brera.inaf.it",
  "subject": "Further Swift XRT observations of GRB 150418A",
  "submitter": "Boris Sbarufatti at INAF-OAB/IASFPA  <boris.sbarufatti@brera.inaf.it>",
  "eventId": "GRB 150418A"
}