GRB spectral parameters within the fireball model

Fireball model of the gamma-ray bursts (GRBs) predicts generation of numerous internal shocks, which then efficiently accelerate charged particles and generate magnetic and electric fields. These fields are produced in the form of relatively small-scale stochastic ensembles of waves, thus, the accelerated particles diffuse in space due to interaction with the random waves and so emit so-called dif...