{
  "bibcode": "2020GCN.27891....1L",
  "body": "F. Longo (University and INFN, Trieste), D. Kocevski (NASA/MSFC), N. Di\nLalla (Stanford University),\nM. Ohno (Hiroshima Univ.), F. Fana Dirirsa (Univ. of Johannesburg), N.\nOmodei (Stanford University)\nand J. Racusin (NASA/GSFC) report on behalf of the Fermi-LAT Collaboration:\n\nOn May 30, 2020, Fermi-LAT detected high-energy emission from\nGRB 200530A, which was also detected by Fermi-GBM at T0 = 00:44:10 UT (GCN\n27861).\n\nThe GRB is detected at high energy (>100 MeV) by Fermi-LAT at a location of:\nRA, Dec = 32.1, 69.2 (degrees, J2000) with an error radius of 0.5 deg\n(90% containment, statistical error only).\nThis was ~40 deg from the LAT boresight when observations started,\nand is ~6 deg from the GBM final ground position.\nThe photon flux above 100 MeV in the time interval 0 - 1000 s\nafter the GBM trigger is 5.5 e-06 +/- 1.8 e-06 ph/cm2/s.\nThe estimated photon index above 100 MeV is -2.3 +/- 0.3.\nThe highest-energy photon is a 1.6 GeV event which is observed\n~100 seconds after the GBM trigger.\nAfter ~T0+1000 s, the GRB location moved outside the LAT FoV.\nWhen it re-entered in the LAT FoV at later times (from ~4800  to ~6700 s)\nit was not detected.\n\nThe late time notification of this detection is due to a delay on the data\nprocessing for the data of May 30.\n\nThe Fermi-LAT point of contact for this burst is\nFrancesco Longo (francesco.longo@ts.infn.it).\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": 27891,
  "createdOn": 1591380180000,
  "email": "franzlongo1969@gmail.com",
  "subject": "GRB 200530A: Fermi-LAT detection",
  "submitter": "Francesco Longo at U of Trieste,INFN Trieste  <franzlongo1969@gmail.com>",
  "eventId": "GRB 200530A"
}