{
  "bibcode": "2011GCN.11629....1B",
  "body": "A. P. Beardmore (U Leicester), W. H. Baumgartner (GSFC/UMBC),\nD. N. Burrows (PSU), M. M. Chester (PSU), J. M. Gelbord (PSU),\nS. T. Holland (CRESST/USRA/GSFC), N. P. M. Kuin (UCL-MSSL),\nO. M. Littlejohns (U Leicester), C. B. Markwardt (NASA/GSFC),\nF. E. Marshall (NASA/GSFC), K. L. Page (U Leicester),\nD. M. Palmer (LANL), T. Sakamoto (NASA/UMBC), C. J. Saxton (UCL-MSSL),\nM. H. Siegel (PSU), E. Sonbas (GSFC/USRA/Adiyaman Univ.),\nM. Stamatikos (OSU/NASA/GSFC), C. A. Swenson (PSU) and\nT. N. Ukwatta (MSU) report on behalf of the Swift Team:\n\nAt 02:02:41 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 110205A (trigger=444643).  Swift slewed immediately to the burst. \nThe BAT on-board calculated location is \nRA, Dec 164.589, +67.516 which is \n   RA(J2000) = 10h 58m 21s\n   Dec(J2000) = +67d 30' 58\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  The BAT lightcurve shows activity\nwith multiple peaks until at least T+300 seconds, with a\npeak count rate of 4500 counts/s (15-150 keV) at T+210 s. \n\nThe XRT began observing the field at 02:05:16.8 UT, 155.4 seconds after\nthe BAT trigger. XRT found a bright, uncatalogued X-ray source located\nat RA, Dec 164.6321, +67.5230 which is equivalent to:\n   RA(J2000)  = 10h 58m 31.70s\n   Dec(J2000) = +67d 31' 22.7\"\nwith an uncertainty of 6.2 arcseconds (radius, 90% containment). This\nlocation is 64 arcseconds from the BAT onboard position, within the BAT\nerror circle. No event data are yet available to determine the column\ndensity using X-ray spectroscopy. \n\nUVOT took a finding chart exposure of 150 seconds with the White filter\nstarting 164 seconds after the BAT trigger. There is a candidate afterglow in\nthe rapidly available 2.7'x2.7' sub-image at\n   RA(J2000) = 10:58:31.12 = 164.62965\n   DEC(J2000) = +67:31:31.2 = 67.52532\nwith a 90%-confidence error radius of about 0.63 arc sec. This position is 9.0\narc sec. from the center of the XRT error circle. The estimated magnitude is\n18.71 with a 1-sigma error of about 0.15. No correction has been made for the\nexpected extinction corresponding to E(B-V) of 0.01. \n\nBurst Advocate for this burst is A. P. Beardmore (apb AT star.le.ac.uk). \nPlease contact the BA by email if you require additional information\nregarding Swift followup of this burst. In extremely urgent cases, after\ntrying the Burst Advocate, you can contact the Swift PI by phone (see\nSwift TOO web site for information: http://www.swift.psu.edu/too.html.)",
  "circularId": 11629,
  "createdOn": 1296872252000,
  "email": "palmer@lanl.gov",
  "subject": "GRB 110205A: Swift detection of a burst with an optical candidate",
  "submitter": "David Palmer at LANL  <palmer@lanl.gov>",
  "eventId": "GRB 110205A"
}