
%0 Journal Article
%A Protheroe, R. J. 
%A Clay, R. W. 
%T Ultra High Energy Cosmic Rays
%J Publications of the Astronomical Society of Australia
%D 2004/02/23
%V 21
%N 1
%P 1-22
%K cosmic rays &#8212; acceleration of particles &#8212; magnetic fields &#8212; dark matter &#8212; radiation mechanisms: nonthermal &#8212; diffuse radiation.
%R https://doi.org/10.1071/AS03047
%U https://www.publish.csiro.au/paper/AS03047 
%X 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. 
