Results from the Pierre Auger Observatory

TL;DR

This paper presents the latest results from the Pierre Auger Observatory, detailing measurements of cosmic ray energy spectrum, composition, and directions, using hybrid detection methods and testing new techniques like radio and microwave detection.

Contribution

It provides comprehensive results from the largest high-energy cosmic ray observatory, including new insights from hybrid and emerging detection techniques.

Findings

Measurements of cosmic ray energy spectrum

Analysis of cosmic ray mass composition

Distribution of cosmic ray arrival directions

Abstract

The Pierre Auger Observatory is the largest observatory of high-energy cosmic rays. It is located in Argentina and has been taking data since January 2004. Extensive air showers initiated by cosmic rays are measured by the hybrid detector, which combines the sampling of particle density at ground by water-Cherenkov tanks and the measurement of atmospheric fluorescence light by telescopes. New detection techniques, like radio and microwave measurement, are also being tested. Results regarding the energy spectrum, mass composition and arrival directions of cosmic rays are presented here.