The 2nd AGILE MCAL GRB cat.: 13yr of observations

We could fit the time-integrated spectrum of 258 GRBs with a single power-law model, resulting in a mean photon index <{beta}> of-2.3. Among them, 43 bursts could also be fitted with a Band model, with peak energy above 400 keV, resulting in a mean low-energy photon index <{alpha}>=-0.6, a mean high-energy photon index <{beta}>=-2.5, and a mean peak energy <Ep>=640keV. The AGILE MCAL GRB sample mostly consists of hard-spectrum GRBs, with a large fraction of short-duration events.

We discuss properties and features of the MCAL bursts, whose detections can be used to perform joint broad-band analysis with other missions, and to provide insights on the high-energy component of the prompt emission in the tens of mega electron volt energy range.