Review on extragalactic cosmic rays detection

TL;DR

This paper reviews current methods and recent results in detecting extragalactic ultra-high-energy cosmic rays, emphasizing indirect ground-based observations and future prospects in the field.

Contribution

It provides a comprehensive overview of detection techniques, recent findings, and future perspectives for studying extragalactic cosmic rays.

Findings

Recent results confirm the extragalactic origin of ultra-high-energy cosmic rays.

Ground-based experiments have advanced detection capabilities.

Future observatories are expected to improve understanding of cosmic ray sources.

Abstract

The understanding of the nature of ultra-high-energy cosmic rays is one of the most intriguing open questions for current and future observatories. These particles are expected to be accelerated in extragalactic sources. Because of their low flux, their detection is done indirectly observing extensive air-showers, with ground-based experiments. A review of the detection technique and the most recent results is presented with a look to the perspectives for the future.