{
  "bibcode": "2017GCN.21452....1R",
  "body": "J. L. Racusin (NASA/GSFC), E. Burns (NASA/GSFC), D. Kocevski (NASA/MSFC), F. Longo (University \nand INFN, Trieste), J. McEnery (NASA/GSFC), S. Razzaque (Johannesburg), G. Vianello (Stanford), \nreport on behalf of the Fermi-LAT team:\n\nFermi-LAT detected high-energy emission from GRB 170810A, which trigger Fermi-GBM (trigger \n524095306 / 170810918) and Swift-BAT (Gibson et al, GCN 21450) at 22:01:41 on August, 10, 2017.\n\nThe best LAT on-ground location is found to be\n\nRA, Dec = 187.5, 3.33 (J2000)\n\nwith an error radius of 0.53 deg (90 % containment, statistical error only), which is consistent with the \nSwift BAT, XRT, and UVOT positions (Gibson et al, GCN 21450; Goad et al., GCN 21451), as well as \nMASTER-NET (Rebolo et al, GCN 21449).\n\nThis was 60 deg from the LAT boresight at the time of the trigger.\n\nThe data from the Fermi-LAT show a significant increase in the event rate that is spatially and temporally \ncorrelated with the trigger with high significance.\n\nThe highest-energy photon is a 2.3 GeV event which is observed 34 seconds after the GBM trigger.\n\nThe Fermi-LAT point of contact for this burst is Judith Racusin (judith.racusin@nasa.gov).\n\nThe Fermi-LAT is a pair conversion telescope designed to cover the energy band from 20 MeV to greater \nthan 300 GeV. It is the product of an international collaboration between NASA and DOE in the U.S. and \nmany scientific institutions across France, Italy, Japan and Sweden.",
  "circularId": 21452,
  "createdOn": 1502418240000,
  "email": "judith.racusin@nasa.gov",
  "subject": "GRB 170810A: Fermi-LAT detection",
  "submitter": "Judith Racusin at GSFC  <judith.racusin@nasa.gov>",
  "eventId": "GRB 170810A"
}