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Study of Solid Protons and Gamma Rays in near-equatorial orbit, evaluating Magnetic Bremsstrahlung vs. LPM Effect, with focus on Aerosol Optical Depths and Shower Development. Data from HiRes Stereo Events analyzed for varying Aerosol Heights.
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UHE Xmax Distributions Solid: Protons Dashed: Gamma Rays dominated by magnetic bremsstrahlung (arriving from east/west for near equatorial orbit) Dotted: Gamma Rays dominated by LPM effect (arriving from north/south for near equatorial orbit)
HiRes Stereo Event lAerosol = 22.5 km lAerosol = 12.5 km