Systematic time-resolved analysis of gamma-ray bursts detected by Fermi-GBM

Here we present a systematic analysis of a subsample of bright GRBs detected by Fermi-GBM in the first two years of the mission, with particular focus on the temporal evolution of the parameters of the spectral models fitted to the data. The lightcurves are divided into time bins using the Bayesian Blocks method, whereas the time-resolved spectral analysis is done using the new dedicated Gamma-Ray Data Tools toolkit. For each bin, different spectral models are fitted to the data, and the best one is selected through appropriate statistical criteria. We illustrate the different analysis phases together with some preliminary results, such as the best model fractions. The aim of this work is to implement an automated pipeline for a systematic analysis of all GRBs detected by the GBM during the mission.