{
  "bibcode": "2006GCN..4717....1O",
  "body": "J. Osborne (U Leicester), S. Barthelmy (GSFC), N. Gehrels (GSFC),\nJ. Kennea (PSU), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD),\nF. Marshall (GSFC), K. Page (U Leicester), D. Palmer (LANL),\nT. Sakamoto (GSFC/ORAU), P. Schady (PSU/UCL-MSSL)\non behalf of the Swift team:\n\nAt 19:08:55 UT, Swift-BAT triggered and located GRB 060209 (trigger=180931).\nThe spacecraft slewed immediately.  The BAT on-board calculated location is\nRA,Dec 65.454,+58.730d {04h 21m 49s,+58d 43' 47\"} (J2000), with an uncertainty\nof 3 arcmin (radius, 90% containment, stat+sys).  The TDRSS lightcurve\ndoes not show anything significant (in T-20 to T+128 sec) which is consistant\nwith a weak short burst and with a cosmic ray shower.  We will not be able\nto distinguish these until we get the full data in about an hour.\n\nThe XRT began taking data at 19:10:00 UT, 64 seconds after the BAT\ntrigger.  The XRT on-board centroid algorithm did not find a source in the\nimage and no prompt position is available.  We are waiting for down-linked\ndata to detect and determine a position for the source.\n\nUVOT took a finding chart exposure of 200 seconds with the V filter\nstarting 65 seconds after the BAT trigger.  No afterglow candidate\nhas been found in the initial data products.  The 2.7'x2.7' sub-image\ncovers 25% of the BAT error circle.  The typical 3-sigma upper limit\nhas been about 18th mag.  The 8'x8' region for the list of sources\ngenerated on-board covers 100% of the BAT error circle.  The list\nof sources is typically complete to about 18.0 mag.  No correction\nhas been made for the expected extinction of about 2.9 magnitudes.",
  "circularId": 4717,
  "createdOn": 1139514271000,
  "email": "Scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 060209(?): Swift-BAT detection of a possible burst",
  "submitter": "Scott Barthelmy at NASA/GSFC  <Scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 060209"
}