Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pabei..21..139w&link_type=abstract
Progress in Astronomy (ISSN 1000-8349), Vol. 21, No. 2, p. 139 - 151 (2003)
Astronomy and Astrophysics
Astrophysics
1
Astrophysics, Cosmic Rays, Cosmic Microwave Background, Elementary Particles
Scientific paper
The recent achievements of ultra-high energy cosmic ray (UHECR) are briefly reviewed. UHECRs are particles with energy above ≍1019eV, which may play an important role in modern high-energy physics, particle physics and cosmology. However, the origin and the composition of UHECRs are still enigmas. Beginning with the GZK cutoff, we present the observations and theoretical models for the UHECR study. It is a common point that these energetic particles may become a window to new physics.
Wu Fei-Fei
Xu Renxin
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