{
  "bibcode": "2009GCN..8825....1C",
  "body": "A. Copete, J. Grindlay (Harvard)\nS. Barthelmy, C. Markwardt, N. Gehrels (NASA/GSFC)\n\nWe report the detection of a likely GRB candidate by the BAT Slew  \nSurvey (BATSS), pending confirmation by Swift XRT, in the slew that  \nstarted at 13:54:02 UT and lasted 94 sec. The ground-calculated  \nposition is RA, Dec = 49.865, +18.478 deg, which is\nRA (J2000) =  03h 19m 28s\nDec(J2000) = +18d 28' 40\"\nwith an uncertainty of 3.69 arcmin (90% confidence, including  \nsystematics). The detection was triggered by simultaneous detections  \nof 6.9 sigma and 8.0 sigma from imaging in the overlapping energy  \nbands of 15-50 keV and 15-150 keV, respectively. The burst mask-tagged  \nlightcurve in the 15-150keV band shows a broad emission peak starting  \nat T+66 sec, lasting 19 sec, and peaking 3 times at T+71, T+74 and t+ T \n+81 sec. T90 = 16sec and T50 = 8sec.\n\nThe time-averaged spectrum over the exposure time of the source is  \nbest fit by a simple power law with photon index 1.35, and the fluence  \nin the 15-150 keV band is 4.0 x 10^-7 erg/cm^2.\n\nA follow-up Swift ToO observation has been scheduled to begin at 20:52  \nUT, 6.97 hours after the burst. Optical/IR observers are encouraged to  \nimage this field as soon as possible as it is an early-evening object.",
  "circularId": 8825,
  "createdOn": 1232316145000,
  "email": "acopete@head.cfa.harvard.edu",
  "subject": "GRB 090118: Possible burst detection from Swift-BAT slew data",
  "submitter": "Antonio Copete at Harvard U  <acopete@head.cfa.harvard.edu>",
  "eventId": "GRB 090118"
}