TITLE: GCN CIRCULAR NUMBER: 32952 SUBJECT: GRB 221119A: Fermi-LAT detection DATE: 22/11/20 14:15:17 GMT FROM: Francesco Longo at U of Trieste,INFN Trieste Longo F. (University and INFN Trieste), Pillera R. (Politecnico and INFN, Bari) and Palatiello M. (University of Udine and INFN Trieste) report on behalf of the Fermi-LAT team: On November, 19, 2022 Fermi-LAT detected high-energy emission from GRB 221119A, which was also detected by Fermi-GBM (trigger 221119627 / 690562978, GCN 32950) at 15:02:53 UT . The best LAT on-ground location is found to be RA, Dec = 144.6, -14.5 (J2000) with an error radius of 0.6 deg (90 % containment, statistical error only). This was at 85 deg from the LAT boresight at the time of the trigger. The GRB entered in the LAT field of view only after 3.5 ks from the trigger time. The 100 MeV - 1 GeV photon flux in the time interval 3500-5000 s after the GBM trigger is (2.1 +/- 0.8) E-06 ph/cm2/s. The estimated integrated photon index above 100 MeV is -1.9 +/- 0.3. The highest-energy photon is a 2.6 GeV event with 99% probability which is observed around 4600 seconds after the GBM trigger. A Swift ToO has been requested for this burst. The Fermi-LAT point of contact for this burst is Michele Palatiello (michele.palatiello@gmail.com). The 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.