{
  "bibcode": "2016GCN.19761....1M",
  "body": "F. E. Marshall (NASA/GSFC), P. D'Avanzo (INAF-OAB),\nJ. A. Kennea (PSU), A. Y. Lien (GSFC/UMBC), A. Melandri (INAF-OAB) and\nM. H. Siegel (PSU) report on behalf of the Swift Team:\n\nAt 01:32:47 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 160804A (trigger= 707231 ).  Swift slewed immediately to the burst. \nThe BAT on-board calculated location is \nRA, Dec 221.639, +10.001 which is \n   RA(J2000) =  14h 46m 33.4s\n   Dec(J2000) = +10d 00m 03.6s\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty). \n\nThe XRT began observing the field at 01:35:14 UT, 147 seconds after\nthe BAT trigger. Using promptly downlinked data we find a bright,\nuncatalogued X-ray source located at RA, Dec 221.62909, +9.99599 which\nis equivalent to:\n   RA(J2000)  = 14h 46m 31.0s\n   Dec(J2000) = +09d 59m 45.6s\nwith an uncertainty of 5 arcseconds (radius, 90% containment). This\nlocation is 39 arcseconds from the BAT onboard position, within the BAT\nerror circle. \n\nDue to bad weather near Guam, we only have limited information about\nthis burst at this time. More information will be available after a\nfull ground station pass. \n\nBurst Advocate for this burst is F. E. Marshall (marshall AT milkyway.gsfc.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": 19761,
  "createdOn": 1470280688000,
  "email": "kennea@swift.psu.edu",
  "subject": "GRB 160804A: Swift detection of a burst",
  "submitter": "Jamie A. Kennea at PSU/Swift-XRT  <kennea@swift.psu.edu>",
  "eventId": "GRB 160804A"
}