{
  "subject": "GRB 120911A: Swift detection of a burst",
  "eventId": "GRB 120911A",
  "bibcode": "2012GCN.13744....1C",
  "createdOn": 1347348859000,
  "circularId": 13744,
  "submitter": "David Palmer at LANL  <palmer@lanl.gov>",
  "email": "palmer@lanl.gov",
  "body": "J. K. Cannizzo (NASA/UMBC), V. D'Elia (ASDC),\nP. A. Evans (U Leicester), C. Guidorzi (U Ferrara),\nC. B. Markwardt (NASA/GSFC), A. Maselli (INAF-IASFPA),\nK. L. Page (U Leicester), D. M. Palmer (LANL), T. Sakamoto (AGU),\nM. H. Siegel (PSU) and E. Troja (NASA/GSFC/ORAU) report on behalf of\nthe Swift Team:\n\nAt 07:08:33 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 120911A (trigger=533268).  Swift could not immediately slew\ndue to the Earth limb constraint.  The BAT on-board calculated location is \nRA, Dec 357.961, +63.099 which is \n   RA(J2000) = 23h 51m 51s\n   Dec(J2000) = +63d 05' 55\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  The BAT light curve showed a complex structure\nwith a duration of at least 30 sec.  The peak count rate\nwas ~2500 counts/sec (15-350 keV), at ~1 sec after the trigger. \n\nDue to an observing constraint, Swift will not slew until T0+51.6\nminutes. There will be no XRT or UVOT data until this time. \n\nBurst Advocate for this burst is J. K. Cannizzo (cannizzo 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.)"
}