Tiny dip could point to cosmic-ray origins (Dec 19)
http://physicsweb.org/article/news/10/12/12
New calculations by physicists in Europe could help reveal the origins
of ultrahigh energy cosmic rays (UHECR). The work identifies a tiny but
telltale feature in the UHECR energy spectrum that if verified
experimentally should help astronomers determine how far UHECRs have
travelled before they reached Earth (Phys Rev Lett 97 231101).
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