Speaker
Description
The Pierre Auger Observatory is the world’s largest cosmic-ray observatory. Located in the Province of Mendoza, Argentina, it covers an area of approximately 3,000 square kilometers. Owing to its hybrid design, the Observatory combines a surface detector array of more than 1,600 water-Cherenkov detectors with 27 fluorescence telescopes overlooking the atmosphere above the surface array. The Phase-I dataset, collected between 2004 and 2022, has revealed several key features of ultra-high-energy cosmic rays, including the presence of a large-scale anisotropy in their arrival directions and prominent spectral features such as the instep and the suppression at the highest energies. In addition, this extensive dataset provides evidence for a significant contribution of intermediate-mass nuclei at the highest energies. Searches for neutral particles have also yielded important constraints relevant to multi-messenger astrophysics. In this contribution, we summarize the most significant results obtained with Phase-I data and discuss their astrophysical implications.
| I read the instructions above | Yes |
|---|