New physics from ultrahigh energy cosmic rays
Observations of cosmic rays with energies above ~ 4 x 10^{10} GeV have inspired several speculative suggestions concerning their origin. The crucial question is whether or not the spectrum exhibits the expected `GZK cutoff' at this energy -- concerning which there are presently contradictory re...
Main Author: | Sarkar, S |
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Format: | Journal article |
Language: | English |
Published: |
2003
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