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A Depression Before A Bump In The Highest Energy Cosmic Ray Spectrum, L. A. Anchordoqui, M. T. Dova, L. N. Epele, J. D. Swain
A Depression Before A Bump In The Highest Energy Cosmic Ray Spectrum, L. A. Anchordoqui, M. T. Dova, L. N. Epele, J. D. Swain
John Swain
We re-examine the interaction of ultra high energy nuclei with the microwave background radiation. We find that the giant dipole resonance leaves a new signature in the differential energy spectrum of iron sources located around 3 Mpc: A depression before the bump which is followed by the expected cutoff.