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The American Astronomical Society, Find Out More The Institute Of Physics, Find Out More Search For Large-Scale Anisotropy On Arrival Directions Of Ultra-High-Energy Cosmic Rays Observed With The Telescope Array Experiment, Rasha U. Abbasi

Physics: Faculty Publications and Other Works

Motivated by the detection of a significant dipole structure in the arrival directions of ultra-high-energy cosmic rays above 8 EeV reported by the Pierre Auger Observatory (Auger), we search for a large-scale anisotropy using data collected with the surface detector array of the Telescope Array Experiment (TA). With 11 yr of TA data, a dipole structure in a projection of the R.A. is fitted with an amplitude of 3.3% ± 1.9% and a phase of 131° ± 33°. The corresponding 99% confidence-level upper limit on the amplitude is 7.3%. At the current level of statistics, the fitted result is compatible …