M. AjelloM. ArimotoM. AxelssonL. BaldiniG. BarbielliniD. BastieriR. BellazziniP. N. BhatE. BissaldiR. D. BlandfordR. BoninoJ. BonnellE. BottaciniJ. BregeonP. BruelR. BuehlerR. A. CameronR. CaputoP. A. CaraveoE. CavazzutiS. ChenC. C. CheungG. ChiaroS. CipriniD. CostantinM. CrnogorcevicS. CutiniM. DainottiF. D'AmmandoP. D.L. Torre LuqueF. D. PalmaA. DesaiR. DesianteN. Di LallaL. Di VenereF. Fana DirirsaS. J. FeganA. FranckowiakY. FukazawaS. FunkP. FuscoF. GarganoD. GasparriniN. GigliettoF. GiordanoM. GirolettiD. GreenI. A. GrenierJ. E. GroveS. GuiriecE. HaysJ. W. HewittD. HoranG. JóhannessonD. KocevskiM. KussL. LatronicoJ. LiF. LongoF. LoparcoM. N. LovelletteP. LubranoS. MalderaA. ManfredaG. Marti-DevesaM. N. MazziottaI. MereuM. MeyerP. F. MichelsonN. MirabalW. MitthumsiriT. MizunoM. E. MonzaniE. MorettiA. MorselliI. V. MoskalenkoM. NegroE. NussM. OhnoN. OmodeiM. OrientiE. OrlandoM. PalatielloV. S. PaliyaD. PanequeM. PersicM. Pesce-RollinsV. PetrosianF. PironS. PoolakkilH. PoonT. A. PorterG. PrincipeJ. L. RacusinS. RainoR. RandoM. RazzanoS. RazzaqueA. ReimerO. ReimerCenter for Space Plasma and Aeronomic ResearchIstituto Nazionale di Fisica Nucleare, Sezione di TriesteIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di BariIstituto Nazionale di Fisica Nucleare, Sezione di TorinoIstituto Nazionale di Fisica Nucleare, Sezione di PisaIstituto Nazionale Di Fisica Nucleare, Sezione di PadovaLaboratoire Univers et Particules de MontpellierUniversite Paris-SaclayLaboratoire Leprince-RinguetKavli Institute for Particle Astrophysics and CosmologyINAF Istituto di Astrofisica Spaziale e Fisica Cosmica, MilanUniversity Science Institute ReykjavikAgenzia Spaziale ItalianaHiroshima UniversityDeutsches Elektronen-Synchrotron (DESY)Osservatorio Astronomico di TriesteUniversità di PisaStockholms universitetAlma Mater Studiorum Università di BolognaNaval Research LaboratoryClemson UniversityUniversity of Maryland, Baltimore CountyKanazawa UniversityUniversitat Autònoma de BarcelonaUniversità degli Studi di BariIstituto Nazionale di Fisica Nucleare - INFNUniversity of MarylandUniversità degli Studi di TriesteMahidol UniversityIstituto Di Radioastronomia, BolognaUniversità degli Studi di TorinoMax-Planck-Institut für Physik (Werner-Heisenberg-Institut)Medizinische Universitat InnsbruckNASA Goddard Space Flight CenterThe George Washington UniversityUniversità degli Studi di PerugiaThe Royal Institute of Technology (KTH)Friedrich-Alexander-Universität Erlangen-NürnbergUniversity of JohannesburgUniversità degli Studi di PadovaUniversity of North Florida2020-01-272020-01-272019-06-10Astrophysical Journal. Vol.878, No.1 (2019)153843570004637X2-s2.0-85069507025https://repository.li.mahidol.ac.th/handle/20.500.14594/50757© 2019. The American Astronomical Society. All rights reserved. The Large Area Telescope (LAT) aboard the Fermi spacecraft routinely observes high-energy emission from gamma-ray bursts (GRBs). Here we present the second catalog of LAT-detected GRBs, covering the first 10 yr of operations, from 2008 to 2018 August 4. A total of 186 GRBs are found; of these, 91 show emission in the range 30-100 MeV (17 of which are seen only in this band) and 169 are detected above 100 MeV. Most of these sources were discovered by other instruments (Fermi/GBM, Swift/BAT, AGILE, INTEGRAL) or reported by the Interplanetary Network (IPN); the LAT has independently triggered on four GRBs. This catalog presents the results for all 186 GRBs. We study onset, duration, and temporal properties of each GRB, as well as spectral characteristics in the 100 MeV-100 GeV energy range. Particular attention is given to the photons with the highest energy. Compared with the first LAT GRB catalog, our rate of detection is significantly improved. The results generally confirm the main findings of the first catalog: the LAT primarily detects the brightest GBM bursts, and the high-energy emission shows delayed onset as well as longer duration. However, in this work we find delays exceeding 1 ks and several GRBs with durations over 10 ks. Furthermore, the larger number of LAT detections shows that these GRBs not only cover the high-fluence range of GBM-detected GRBs but also sample lower fluences. In addition, the greater number of detected GRBs with redshift estimates allows us to study their properties in both the observer and rest frames. Comparison of the observational results with theoretical predictions reveals that no model is currently able to explain all results, highlighting the role of LAT observations in driving theoretical models.Mahidol UniversityEarth and Planetary SciencesArticleSCOPUS10.3847/1538-4357/ab1d4e