{
  "bibcode": "2015GCN.18731....1U",
  "body": "T. N. Ukwatta (LANL), S. D. Barthelmy (GSFC),\nJ. R. Cummings (NASA/UMBC) and K. L. Page (U Leicester) report on\nbehalf of the Swift Team:\n\nAt 03:05:12 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 151228A (trigger=668543).  Swift did not slew to the burst. \nThe BAT on-board calculated location is \nRA, Dec 214.004, -17.689, which is \n   RA(J2000)  =  14h 16m 01s\n   Dec(J2000) = -17d 41' 19\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  The BAT light curve shows a single spike\nstructure with a duration of about 0.6 sec.  The peak count rate\nwas ~6000 counts/sec (15-350 keV), at ~0 sec after the trigger. \n\nDue to an observing constraint, Swift cannot slew to the BAT position. \nThere will thus be no XRT or UVOT data for this trigger. \n\nBurst Advocate for this burst is T. N. Ukwatta (tilan.ukwatta AT gmail.com). \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/too.html.)",
  "circularId": 18731,
  "createdOn": 1451272493000,
  "email": "scott@milkyway.gsfc.nasa.gov",
  "subject": "GRB 151228A: Swift detection of a short burst",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@milkyway.gsfc.nasa.gov>",
  "eventId": "GRB 151228A"
}