SciPost Submission Page
Probing Astroparticle and Particle Physics at the Pierre Auger Observatory: highlights and perspectives
by Antonella Castellina for the Pierre Auger Collaboration
Submission summary
| Authors (as registered SciPost users): | Antonella Castellina |
| Submission information | |
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| Preprint Link: | scipost_202410_00067v1 (pdf) |
| Date submitted: | 2024-10-31 16:09 |
| Submitted by: | Castellina, Antonella |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 22nd International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2024) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
With more than 15 years of data acquisition, the results from the Pierre Auger Observatory provide the best and most precise data on ultra-high energy cosmic rays (UHECRs) in the world. It is now beyond doubt that UHECR composition becomes lighter for energies increasing up to ∼ 2 EeV, getting heavier again when approaching ultra-high energies. A predominantly extragalactic origin of UHECRs beyond the ankle is proven with high significance, while at higher energies there are indications of correlation with nearby sources. The collected data allow us to study the properties of hadronic interactions at ultra-high energies and to test the existence of possible effects beyond the Standard Model of particles. The prospects opened up by the AugerPrime upgrade are discussed.