Lawrence Wiencke

TL;DR: In this article, the Pierre Auger Collaboration has reported evidence for anisotropies in the arrival directions of cosmic rays with energies larger thanEth = 55 EeV and showed that there is a correlation above the isotropic expectation with nearby active galaxies and the largest excess is in a celestial region around the position of the radio galaxy Cen A.

TL;DR: The Pierre Auger Collaboration reports the observation of thousands of cosmic rays with ultrahigh energies of several exa–electron volts, arriving in a slightly dipolar distribution, showing that they originate outside the Milky Way Galaxy.

TL;DR: A new method to test hadronic interaction models without relying on the absolute energy calibration is introduced, and it is applied to events with primary energy 6-16 EeV (E_{CM}=110-170 TeV), whose longitudinal development and lateral distribution were simultaneously measured by the Pierre Auger Observatory.

TL;DR: In this article, the authors reported a measurement for ultra-high energy cosmic rays of the correlation between the depth of shower maximum and the signal in the water Cherenkov stations of air-showers registered simultaneously by the fluorescence and the surface detectors of the Pierre Auger Observatory.

TL;DR: The radiation energy provides direct access to the calorimetric energy in the electromagnetic cascade of extensive air showers and allows the direct calibration of any cosmic-ray radio detector against the well-established energy scale of the Pierre Auger Observatory.