Ultrahigh Energy Cosmic Rays
Antoine Letessier-Selvon, Todor Stanev
TL;DR
This review summarizes recent findings on ultrahigh energy cosmic rays exceeding 10^18 eV, focusing on experimental results, composition, sources, and ongoing research efforts.
Contribution
It provides a comprehensive overview of the latest experimental data and discusses current controversies and future projects in ultrahigh energy cosmic ray research.
Findings
Energy spectrum measurements from HiRes and Auger
Chemical composition insights from recent experiments
Searches for cosmic ray sources and related controversies
Abstract
This is a review of the most resent results from the investigation of the Ultrahigh Energy Cosmic Rays, particles of energy exceeding 10 eV. After a general introduction to the topic and a brief review of the lower energy cosmic rays and the detection methods, the two most recent experiments, the High Resolution Fly's Eye (HiRes) and the Southern Auger Observatory are described. We then concentrate on the results from these two experiments on the cosmic ray energy spectrum, the chemical composition of these cosmic rays and on the searches for their sources. We conclude with a brief analysis of the controversies in these results and the projects in development and construction that can help solve the remaining problems with these particles.
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