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diffuse radiation.

Publications of the Astronomical Society of Australia (1)

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Ultra High Energy Cosmic Rays
R. J. Protheroe, R. W. Clay
Journal:

Publications of the Astronomical Society of Australia / Volume 21 / Issue 1 / 2004

Published online by Cambridge University Press:

05 March 2013, pp. 1-22
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Cosmic rays with energies above 1018 eV are currently of considerable interest in astrophysics and are to be further studied in a number of projects which are either currently under construction or the subject of well-developed proposals. This paper aims to discuss some of the physics of such particles in terms of current knowledge and information from particle astrophysics at other energies.