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astro-ph2000
Deducing the Source of Ultrahigh Energy Cosmic Rays
Glennys R. Farrar, Tsvi Piran
The apparent lack of suitable astrophysical sources for cosmic rays with E > 10^{19.7} eV (UHECRs) is the "GZK Paradox". We argue that whatever mechanism produces them must also ac…
astro-ph2000
COBE- and Cluster-Normalized CDM Simulations
Tsvi Piran, Hagai El-Ad, Hugo Martel +1
We introduce a set of four new publicly available N-body simulations, the most recent additions to the Texas P^3M Database. Our models probe the less studied parameter space region…