{
  "bibcode": "2015GCN.18760....1N",
  "body": "J. Norris (BSU), S. D. Barthelmy (GSFC), A. Y. Lien (GSFC/UMBC) for the Swift-BAT Team:\n\nWe report the spectral lag analysis for GRB 151229A (Kocevski, et al.,\nGCN Circ. 18745, & Lien 18751) based on the BAT data.  Using 8-ms binned light curve,\nthe spectral lag for the 25-50 keV to 100-300 keV bands is -47.6 +/-31 ms and\n+12 +/-24 for the 15-25 to 50-100 bands.  Although the errors are large,\nthe values are marginally consistent with zero, therefore we believe\nthis burst belongs to a short burst category, although we can not rule out\nthe long burst possibility.  There is no evidence for extended emission.",
  "circularId": 18760,
  "createdOn": 1451430716000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 151229A Swift-BAT Spectral lag analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 151229A"
}