{
  "bibcode": "2014GCN.15986....1C",
  "body": "S. B. Cenko (GSFC), M. G. Bernardini (INAF-OAB), D. N. Burrows (PSU),\nP. D'Avanzo (INAF-OAB), J. A. Kennea (PSU),\nH. A. Krimm (CRESST/GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU),\nF. E. Marshall (NASA/GSFC), A. Melandri (INAF-OAB), T. Sakamoto (AGU),\nB. Sbarufatti (INAF-OAB/PSU) and M. H. Siegel (PSU) report on behalf\nof the Swift Team:\n\nAt 00:09:07 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 140318A (trigger=592204).  Swift slewed immediately to the burst. \nThe BAT on-board calculated location is \nRA, Dec 184.053, +20.207 which is \n   RA(J2000) = 12h 16m 13s\n   Dec(J2000) = +20d 12' 27\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  The BAT light curve showed a single peak \nstructure with a duration of about 30 sec.  The peak count rate\nwas ~1320 counts/sec (15-350 keV), at ~5 sec after the trigger. \n\nThe XRT began observing the field at 00:11:12.7 UT, 124.8 seconds after\nthe BAT trigger. XRT found a bright, uncatalogued X-ray source located\nat RA, Dec 184.0906, 20.2080 which is equivalent to:\n   RA(J2000)  = +12h 16m 21.74s\n   Dec(J2000) = +20d 12' 28.8\"\nwith an uncertainty of 6.9 arcseconds (radius, 90% containment). This\nlocation is 127 arcseconds from the BAT onboard position, within the\nBAT error circle. No event data are yet available to determine the\ncolumn density using X-ray spectroscopy. \n\nThe initial flux in the 2.5 s image was 3.63e-10 erg cm^-2 s^-1 (0.2-10\nkeV). \n\nUVOT took a finding chart exposure of 150 seconds with the White filter\nstarting 132 seconds after the BAT trigger. No credible afterglow candidate has\nbeen found in the initial data products. Results from the 2.7'x2.7' sub-image\nare not available at this time. The 8'x8' region for the list of sources\ngenerated on-board covers 100% of the XRT error circle. The list of sources is\ntypically complete to about 18 mag. No correction has been made for the\nexpected extinction corresponding to E(B-V) of 0.02. \n\nBurst Advocate for this burst is S. B. Cenko (brad.cenko AT nasa.gov). \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": 15986,
  "createdOn": 1395102921000,
  "email": "kennea@swift.psu.edu",
  "subject": "GRB 140318A: Swift detection of a burst",
  "submitter": "Jamie A. Kennea at PSU/Swift-XRT  <kennea@swift.psu.edu>",
  "eventId": "GRB 140318A"
}