Directional analysis of the GRBs angular correlations. Left panel: σ^FERMI-map, with resolution N_side = 4, obtained from the directional analysis of the FERMIGRB sample. Middle panel: corresponding dipole component of the σ^FERMI-map. Right panel: power spectrum 𝒮_ℓ^FERMI, ℓ = 1, …, 5 of the σ^FERMI-map shown as blue dots, and the median power spectrum of 500 isotropic σ-maps are shown on the solid line. The shaded region corresponds to 1σ and 2σ deviations from the isotropic case.