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Generation of anisotropically distributed UHECRs in a region of interest. a First, UHECRs are distributed symmetrically around the center of the ROI using a Fisher distribution with energy dependent concentration parameter according to Eq. (6). b The UHECRs are then deflected in one direction using Eq. (8). c UHECRs deflected outside of the ROI are moved to a random position inside the region
