Spectral features in galactic cosmic rays

TL;DR

Recent high-precision cosmic ray measurements reveal unexpected spectral features that challenge existing models of cosmic ray acceleration and propagation in the Milky Way.

Contribution

This paper provides an overview of recent cosmic ray flux measurements and discusses potential interpretations of their spectral features.

Findings

Detection of unexpected spectral features in cosmic ray data

Challenges to conventional cosmic ray acceleration models

Implications for understanding galactic cosmic ray propagation

Abstract

Recent results by space borne experiments took cosmic ray data to a precision level. These new results are able to challenge the conventional scenario for cosmic ray acceleration and propagation in the Milky Way. In these contributions, written for the XVII Vulcano Workshop, we will give an overview of the latest results of the cosmic ray fluxes, and some possible interpretations will be discussed. These measurements have a common feature, namely the presence of unexpected and still not yet fully understood spectral features.