Search for a large-scale anisotropy of ultra-high energy cosmic rays with the Telescope Array

摘要

The correlation between the first three years of the Telescope Array surface detector data and the large-scalestructure of the Universe is studied. The predicted cosmic ray flux is calculated by propagating ultra-high energy protonsfrom sources whose distribution is derived from the complete catalog of galaxies within 250 Mpc from Earth. The flux-samplingmethod is used to test whether the actual data follow the model predictions. We calculate the statistical powerof the flux sampling test for the case of the Telescope Array, then compare TA data with LSS model predictions with andwithout galactic magnetic field, and also to the isotropic distribution.