{
  "bibcode": "2019GCN.24483....1A",
  "body": "M. Axelsson (KTH and Stockholm Univ.), F. Longo (Univ. and INFN Trieste), M. Arimoto (Kanazawa Univ.) and F. Dirirsa (Univ. of Johannesburg) report on behalf of the Fermi-LAT team:\n\nOn May 11, 2019, Fermi-LAT detected high-energy emission from GRB 190511A, which was also detected by Fermi-GBM (trigger 579251669 / 190511302; GCN 24482) and Swift (GCNs 24472 and 24481).\n\nThe best LAT on-ground location is found to be\n\nRA, Dec 126.36, -20.25 (degrees, J2000)\n\nwith an error radius of 0.2 deg (90% containment, statistical error only).\nThis was 24 deg from the LAT boresight at the time of the GBM trigger:\n\nT0 =  07:14:24.36 UT.\n\nThe data from the Fermi-LAT show a significant increase in the event rate after the GBM trigger that is spatially correlated with the GBM emission with high significance and consistent with the Swift location.\n\nThe photon flux above 100 MeV in the time interval 0-1400s after the GBM trigger is 3.6e-6 ph/cm2/s.\n\nThe estimated photon index above 100 MeV is -2.0 +/- 0.2.\n\nThe Fermi-LAT point of contact for this burst is Feraol Dirirsa (fdirirsa@uj.ac.za<mailto:fdirirsa@uj.ac.za>).\n\nThe Fermi-LAT is a pair conversion telescope designed to cover the energy band from 20 MeV to greater than 300 GeV. It is the product of an international collaboration between NASA and DOE in the U.S. and many scientific institutions across France, Italy, Japan and Sweden.",
  "circularId": 24483,
  "createdOn": 1557580511000,
  "email": "magaxe@kth.se",
  "subject": "GRB 190511A: Fermi-LAT detection",
  "submitter": "Magnus Axelsson at Stockholm U.  <magaxe@kth.se>",
  "eventId": "GRB 190511A"
}