First Fermi-LAT Solar Flare Catalog

We present the first Fermi-Large Area Telescope (LAT) solar flare catalog covering 24th cycle. This contains 45 Fermi-LAT flares (FLSFs) with emission in ?-ray energy band (30 MeV–10 GeV) detected a significance of ?5? over years 2010–2018. A subsample containing 37 these exhibits delayed beyond prompt-impulsive hard X-ray phase, 21 showing lasting more than two hours. No is four flares. also this observations GeV from three originating active regions located behind limb visible disk. report lightcurves, spectra, best proton index, and localization (when possible) for all FLSFs. The spectra are consistent decay pions produced by >300 MeV protons. work largest sample high-energy ever reported provides unique opportunity to perform population studies on different phases thus allowing new window physics be opened.