Fig. 6. Fluence distribution of Fermi GRBs.
We have normalized the number of bursts for the mission lifetime, its duty cycle, and field of view (1). At large fluences (S ≳ 5 × 10−5 erg cm−2) the distribution has a slope consistent with the Euclidean one (−3/2), also shown for comparison (dashed line). The two most fluent GRBs are GRB 130427A (circle) and GRB 221009A (star).