Cosmogenic photons as a test of ultra-high energy cosmic ray composition

Although recent measurements of the shower profiles of ultra-high energy cosmic rays suggest that they are largely initiated by heavy nuclei, such conclusions rely on hadronic interaction models which have large uncertainties. We investigate an alternative test of cosmic ray composition which is bas...

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Bibliographic Details
Main Authors: Hooper, D, Taylor, A, Sarkar, S
Format: Journal article
Published: Elsevier 2011