coupure GZK

[1997] [Search and Discovery] Auger Project Seeks to Study Highest Energy Cosmic Rays ; Bertram Schwarzschild ; Physics Today 50 (fev 1997) p. 19 [lien]
[1998] [Search and Discovery] Giant Air Shower Array Shows Cosmic-Ray Spectrum Violating Greisen Cutoff ; Bertram Schwarzschild ; Physics Today 51 (oct 1998) p. 19 [lien]
[2007] [Search and Discovery] Fluorescence Telescopes Observe the Predicted Ultrahigh-Energy Cutoff of the Cosmic-Ray Spectrum ; Bertram Schwarzschild ; Physics Today 60 (mai 2007) p. 17 [lien]
[2008] [Search and Discovery] The Highest-Energy Cosmic Rays Appear to Come from Nearby Active Galactic Nuclei ; Bertram Schwarzschild ; Physics Today 61 (jan 2008) p. 16 [lien]