Origin and role of relativistic cosmic particles

TL;DR

This paper emphasizes the significance of studying relativistic cosmic rays and discusses how ground-based gamma-ray observations, especially with the Cherenkov Telescope Array, can advance understanding in this field.

Contribution

It highlights the scientific potential of gamma-ray observations in exploring relativistic cosmic particles and consolidates key insights from the CTA science case.

Findings

Gamma-ray observations can reveal the origins of cosmic rays.

CTA will enable detailed studies of cosmic ray acceleration.

Understanding cosmic rays impacts models of stellar and galactic evolution.

Abstract

This white paper briefly summarizes the importance of the study of relativistic cosmic rays, both as a constituent of our Universe, and through their impact on stellar and galactic evolution. The focus is on what can be learned over the coming decade through ground-based gamma-ray observations over the 20 GeV to 300 TeV range. The majority of the material is drawn directly from "Science with the Cherenkov Telescope Array", which describes the overall science case for CTA. We request that authors wishing to cite results contained in this white paper cite the original work.