Speaker
Dr
Luca Latronico
(INFN Torino)
Description
The Fermi LAT regularly detects Terrestrial Gamma-ray Flashes (TGFs)
during its nominal astrophysical sky-survey observing program. Because of
the LAT's flexible trigger logic, TGF emissions at and above 10 MeV are
detected with high sensitivity despite their having arrived from outside
the instrument's field of view. A deep search of the first four years of
LAT data reveals more than 300 TGFs with hard gamma-ray emission, of which
many were independently detected by Fermi GBM. Here we present a summary
of the spectral, temporal, diurnal, and geographic features of this sample
of high-energy TGFs.
