{
  "bibcode": "2019GCN.26595....1M",
  "body": "A. Melandri (INAF-OAB), S. D. Barthelmy (GSFC),\nM. G. Bernardini (INAF-OAB), N. J. Klingler (PSU),\nS Laha (GSFC/UMBC/CRESST), A. Y. Lien (GSFC/UMBC) and M. J. Moss (GWU)\nreport on behalf of the Neil Gehrels Swift Observatory Team:\n\nAt 01:39:37 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 191227A (trigger=946344).  Swift did not slew immediately\ndue to an observing constraint. \nThe BAT on-board calculated location is \nRA, Dec 319.170, -16.704 which is \n   RA(J2000) = 21h 16m 41s\n   Dec(J2000) = -16d 42' 15\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  The BAT light curve showed a multi-peaked\nstructure with a duration of about 30 sec.  The peak count rate\nwas ~12000 counts/sec (15-350 keV), at ~3 sec after the trigger. \n\nDue to a Sun observing constraint, Swift cannot slew to the BAT\nposition until 15:10 UT on 2020 March 23. There will thus be no XRT or\nUVOT data for this trigger before this time. \n\nBurst Advocate for this burst is A. Melandri (andrea.melandri AT brera.inaf.it). \nPlease contact the BA by email if you require additional information\nregarding Swift followup of this burst. In extremely urgent cases, after\ntrying the Burst Advocate, you can contact the Swift PI by phone (see\nSwift TOO web site for information: http://www.swift.psu.edu/)",
  "circularId": 26595,
  "createdOn": 1577411527000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 191227A: Swift detection of a burst",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 191227A"
}