Ultra High Energy Cosmic Rays -- an Overview

TL;DR

This paper provides an overview of ultra high energy cosmic rays, summarizing experimental evidence, theoretical models, and their implications for dark matter and cosmology, while highlighting key open questions in the field.

Contribution

It offers a comprehensive review of experimental data, theoretical explanations, and open questions in the study of ultra high energy cosmic rays.

Findings

Summarizes key experimental evidence on ultra high energy cosmic rays.

Discusses implications for dark matter and cosmology.

Highlights open questions and future research directions.

Abstract

We review the main experimental evidences on ultra high energy cosmic rays and their implications in the physics of these extremely energetic particles, also in connection with dark matter and cosmology. We discuss the basis of theoretical models aiming at explaining observations, highlighting the most relevant open questions in this fascinating field of research.