Fig. 5.

Hammer projection of the map of principal axes of the directional energy distribution in galactic coordinates. The red shaded areas represent the regions of interest. Black lines denote the second principal axes (thrust-major axes) ${\mathbf{n}}_2$, black dots mark the positions of the thrust axes ${\mathbf{n}}_1$. The blue shading indicates the exposure of the Pierre Auger Observatory; the dashed line marks the extent of its field of view