Pierre Auger et Lise Meitner : Comparaison de leurs contributions à l’effet Auger

Pierre Auger Observatory: Status Report

The Pierre Auger Observatory is a large international effort to provide measurements of extensive air showers (EAS) initiated in the upper atmosphere by cosmic rays with energies above 10 eV , the Ultra High Energy Cosmic Rays (UHECR’s). The explanations for the origin, acceleration processes and composition of the UHECR’s face theoretical and experimental difficulties, due to the extremely low...

Recent results from the Pierre Auger Observatory

The main results from the Auger Observatory are described. A steepening of the spectrum is observed at the highest energies, supporting the expectation that above 4×10 eV the cosmic ray energies are significantly degraded by interactions with the CMB photons (the GZK effect). This is further supported by the correlations observed above 6× 10 eV with the distribution of nearby active galaxies, w...

Online Monitoring of the Pierre Auger Observatory

The data taking of the different components of the Pierre Auger Observatory, i.e. the surface detectors (SD) and the fluorescence telescopes (FD) has to be supervised by a shift crew on site to guarantee a smooth operation. A monitoring tool has been developed to support the shifter in judging and supervising the status of the detector components, the electronics and the data-acquisition (DAQ)....

Recent Results from the Pierre Auger Observatory

The goal of the Pierre Auger Observatory is to determine the still unknown nature and origin of ultra-high energy cosmic rays. The study of these elusive particles probes astrophysical sites of particle acceleration as well as fundamental interactions at energies unattainable in accelerator facilities. Auger combines two observational techniques, a large surface array and air fluorescence detec...

Physics Results of the Pierre Auger Observatory