Cosmic Ray Origins: An Introduction

TL;DR

This paper reviews the current understanding of cosmic ray origins, recent observational and theoretical progress, and the connection to dark matter detection, highlighting future prospects in astrophysical particle acceleration research.

Contribution

It provides a comprehensive overview of cosmic ray spectrum features, models, and recent developments in astrophysical acceleration mechanisms, setting the stage for future discoveries.

Findings

Enhanced understanding of cosmic ray spectrum from GeV to ZeV energies

Recent progress in models of astrophysical particle acceleration

Potential for future discoveries linking cosmic rays and dark matter

Abstract

Physicists have pondered the origin of cosmic rays for over a hundred years. However the last few years have seen an upsurge in the observation, progress in the theory and a genuine increase in the importance attached to the topic due to its intimate connection to the indirect detection of evidence for dark matter. The intent of this talk is to set the stage for the meeting by reviewing some of the basic features of the entire cosmic ray spectrum from GeV to ZeV energy and some of the models that have been developed. The connection will also be made to recent developments in understanding general astrophysical particle acceleration in pulsar wind nebulae, relativistic jets and gamma ray bursts. The prospects for future discoveries, which may elucidate the origin of cosmic rays, are bright.