The Pierre Auger Observatory: status, results and perspective

TL;DR

The Pierre Auger Observatory has significantly advanced ultra-high-energy cosmic ray research by accumulating extensive data on energy spectrum, composition, and anisotropies, with ongoing developments and future plans to deepen understanding.

Contribution

This paper reports on the current status, key results, and future perspectives of the Pierre Auger Observatory in UHECR research.

Findings

Large dataset surpassing previous experiments

Insights into cosmic-ray energy spectrum and composition

Detection of anisotropies and photon fractions

Abstract

While the completion of the Pierre Auger Observatory (or simply ``Auger'') is still underway, the 5165 km^2.sr.yr integrated acceptance accumulated since the January 1st, 2004 is now significantly larger than what was gathered by the previous experiments dedicated to the detection of ultra-high-energy cosmic rays (UHECRs). We report on the development status of Auger and present some results related to the cosmic-ray energy spectrum, composition and anisotropies, and the photon fraction at ultra-high energy. We briefly discuss the importance of the ankle region to understand the overall phenomenology of cosmic-rays, and mention future enhancements of Auger focusing on this energy range.