{
  "bibcode": "2015GCN.17667....1L",
  "body": "F. Longo (University & INFN Trieste), E. Bissaldi (INFN Bari),\nM. Arimoto (Tokyo Tech) and S. Zhu (UMD, USA)\nreport on behalf of the Fermi-LAT team:\n\n\n\nAt 21:54:10.95 on April 03, 2015, Fermi-LAT detected\nhigh-energy emission from GRB 150403A, which was also\ndetected by Fermi-GBM (trigger 449790853/150403913)\nand Swift (Lien at al, GCN 17665).\n\nThe GBM location was initially inside the LAT field\nof view at an angle of ~55 degrees to the LAT boresight\nand triggered an autonomous repoint of the spacecraft.\n\nThe best LAT on-ground location is found to be\n\nRA, Dec (J2000)   311.79, -62.76\n\nwith an error radius of  0.50 deg (95% containment,\nstatistical error only) and consistent with the\nenhanced Swift/XRT location (Beardmore et al, GCN 17666).\n\nThe data from the Fermi-LAT show a significant increase\nin the event rate within 12 degrees of the Swift/XRT\nlocation after the trigger.\nMore than 30 photons above 100 MeV are observed\nwithin 2000 seconds. The highest-energy photon is a\n5 GeV event which is observed 630 s after the GBM trigger.\n\nUsing the LAT Low Energy (LLE) data selection, over 200 counts\nabove background are detected within a 20 s interval coincident\nwith the time of the GBM emission.\n\n\nThe Fermi-LAT point of contact for this burst is\nSylvia Zhu (sjzhu@umd.edu).\n\n\n\nThe Fermi-LAT is a pair conversion telescope designed to cover\nthe energy band from 20 MeV to greater than 300 GeV.\nIt is the product of an international collaboration between\nNASA and DOE in the U.S. and many scientific institutions\nacross France, Italy, Japan and Sweden.",
  "circularId": 17667,
  "createdOn": 1428142374000,
  "email": "Elisabetta.Bissaldi@uibk.ac.at",
  "subject": "GRB 150403A: Fermi-LAT detection",
  "submitter": "Elisabetta Bissaldi at U.Innsbruk/IAPP  <Elisabetta.Bissaldi@uibk.ac.at>",
  "eventId": "GRB 150403A"
}