Ultrahigh Energy Cosmic Rays Detection
/ Authors
/ Abstract
The paper describes methods used for the detection of cosmic rays with energies above 1018 eV (UHECR, UltraHigh Energy Cosmic Rays). It had been anticipated there would be a cutoff in the energy spectrum of primary cosmic rays around 3⋅1019 eV induced by their interaction with the 2.7 °K primordial photons. This has become known as the GZK cutoff. However, several showers have been detected with estimated primary energy exceeding this limit.
Journal: arXiv: Astrophysics
DOI: 10.1063/1.2125661