{
  "bibcode": "2005GCN..4222....1T",
  "body": "G. Tagliaferri (INAF-OAB), S. Barthelmy (GSFC), D. Burrows (PSU),\nS. Campana (INAF-OAB), M. Chester (PSU), N. Gehrels (GSFC),\nT. Mineo (INAF-IASF PA), K. Page (U Leicester), D. Palmer (LANL),\nT. Sakamoto (GSFC)\non behalf of the Swift team:\n\nAt 08:39:39 UT, Swift-BAT triggered and located GRB 051109B (trigger=163170).\nThe BAT on-board calculated location is RA,Dec 345.440d,+38.672d\n{23h 01m 46s,+38d 40' 20\"} (J2000), with an uncertainty of 3 arcmin\n(radius, 90% containment, stat+sys).  The BAT light curve shows\na multi-peak structure with a total duration of ~20 sec.  The peak count rate\nwas ~2000 counts/sec (15-350 keV), at ~1 sec after the trigger.\n\nThe S/C slewed immediately and the XRT began observations at 08:41:06 UT\n(86 seconds after the BAT trigger) in auto state.  The on-board detection\nalgorithm failed to find a centroid, although the lightcurve suggests\na faint source.  More information will be available after the next Malindi pass.\n\nUVOT began observing at 08:41:03 UT, 84 sec after the BAT trigger.\nThe on-board source detection algorithm reports an uncataloged source\nat RA=345.46 {23h 01m 50.40s}, DEC=+38.66 {38d 39' 36.0\"}, 76 arcsec\nfrom the BAT position, with V magnitude 18.4 +/-0.1, in a 200 sec observation\ncovering the BAT error circle.  V-band extinction in the direction\nof the BAT position is A_V = 0.55.",
  "circularId": 4222,
  "createdOn": 1131528958000,
  "email": "Scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 051109B: Swift detection of a burst",
  "submitter": "Scott Barthelmy at NASA/GSFC  <Scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 051109B"
}