The composition of cosmic rays at the knee

TL;DR

This paper reviews current experimental data on cosmic ray composition around the PeV energy region and compares it with existing models of cosmic ray acceleration and propagation.

Contribution

It provides a comprehensive comparison between experimental results and theoretical models for cosmic ray composition at high energies.

Findings

Experimental data shows specific composition patterns at PeV energies.

Comparison reveals agreements and discrepancies with models.

Highlights need for further research in cosmic ray physics.

Abstract

The present experimental status concerning the composition of cosmic rays in the PeV region is reviewed. The results are compared to predictions of contemporary models for the acceleration and propagation of galactic cosmic rays.