{
  "bibcode": "2006GCN..5233....1Z",
  "body": "H. Z. Ziaeepour (UCL-MSSL), S. D. Barthelmy (GSFC),\nN. Gehrels (NASA/GSFC), M. R. Goad (U Leicester), J. A. Kennea (PSU),\nH. A. Krimm (GSFC/USRA), K. M. McLean (LANL/UTD),\nS.R. Oates (UCL-MSSL), K. L. Page (U Leicester) and\nM. Stamatikos (NASA/ORAU) report on behalf of the Swift Team:\n\nAt 05:12:13 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 060607 (trigger=213823).  Swift slewed immediately to the burst. \nThe BAT on-board calculated location is \nRA,Dec 329.712, -22.506 {21h 58m 51s, -22d 30' 20\"} (J2000)\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  The BAT light curve showed a double-peaked\nstructure with a duration of about 40 sec.  The peak count rate\nwas ~3000 counts/sec (15-350 keV), at ~0 sec after the trigger. \n\nThe XRT began observing the field at 05:13:18 UT, 65 seconds after the\nBAT trigger. XRT found a bright, variable, uncatalogued X-ray source\nlocated at RA(J2000) = 21h 58m 50.1s, Dec(J2000) = -22d 29' 49.9\", with an\nestimated uncertainty of 4.7 arcseconds (90% confidence radius). \nThis location is 33 arcseconds from the BAT on-board position, within\nthe BAT error circle. The initial flux in the 2.5s image was\n3.3e-09 erg/cm2/s (0.2-10 keV). \n\nUVOT took a finding chart exposure of 100 seconds with the White\n(160-650 nm) filter starting 75 seconds after the BAT trigger. There\nis a candidate afterglow in the rapidly available 2.7'x2.7' sub-image\nat (RA,DEC) (J2000) of (329.7100,-22.4963) or\n(21h58m50.40s,-22o29'46.7\")  with a 1-sigma error radius of about 0.5\narc sec. This position is 4.7 arc sec. from the center of the XRT\nerror circle. The estimated magnitude is 15.7 with a 1-sigma error of\nabout 0.5 mag. No correction has been made for the expected extinction\ncorresponding to E(B-V) of  0.03.",
  "circularId": 5233,
  "createdOn": 1149659008000,
  "email": "kennea@astro.psu.edu",
  "subject": "GRB 060607: Swift detection of a burst with bright optical counterpart",
  "submitter": "Jamie A. Kennea at PSU/Swift-XRT  <kennea@astro.psu.edu>",
  "eventId": "GRB 060607"
}