{
  "bibcode": "2013GCN.15464....1R",
  "body": "J. L. Racusin (NASA/GSFC), S. Zhu (NASA/GSFC/UMD), D. Kocevski (NASA/GSFC/ORAU), M. Ohno (Hiroshima), \nN. Omodei (Stanford), E. Troja (NASA/GSFC/CRESST) and G. Vianello (Stanford), report on behalf of the Fermi LAT \nteam:\n\nAt 20:41:55.76 UTC on November 8, 2013, Fermi LAT triggered onboard on high energy emission from GRB 131108A.  \nThe burst was also detected by GBM (trigger 131108863/405636118), and triggered an autonomous repoint of the \nspacecraft.  This is the first onboard trigger since 2009, indicating a potentially rare and exciting event.\n\nThe onboard location is R.A., Dec. 156.47, +9.90 (J2000) with an approximate error radius of 0.5 deg, seeded by the \nGBM detected position.  This was 27 deg from the LAT boresight at the time of the trigger. We anticipate providing a \nrefined location within the next 12-15 hours when the LAT science data for this burst is downlinked and processed.\n\nThe Fermi LAT point of contact for this burst is Masanori Ohno (ohno@hep01.hepl.hiroshima-u.ac.jp).\n\nA Swift TOO request has been approved.\n\nThe Fermi LAT is a pair conversion telescope designed to cover the energy band from 20 MeV to greater than 300 \nGeV. It is the product of an international collaboration between NASA and DOE in the U.S. and many scientific \ninstitutions across France, Italy, Japan and Sweden.",
  "circularId": 15464,
  "createdOn": 1383946757000,
  "email": "judith.racusin@nasa.gov",
  "subject": "GRB 131108A: Fermi-LAT onboard detection of a burst",
  "submitter": "Judith Racusin at GSFC  <judith.racusin@nasa.gov>",
  "eventId": "GRB 131108A"
}