Propagation of cosmic ray electrons in the Galaxy

TL;DR

This paper presents a new calculation of cosmic ray electron propagation in the Galaxy using an anomalous diffusion model, which aligns well with observed spectra and derives a source spectral index of 2.95.

Contribution

It introduces an anomalous diffusion model for cosmic ray electrons, with parameters based on nuclei propagation studies, providing improved spectral predictions.

Findings

Predicted electron spectrum agrees with measurements

Source spectral index determined as 2.95

Anomalous diffusion effectively models electron propagation

Abstract

We have made a new calculation of the cosmic ray electron spectrum using an anomalous diffusion model to describe the propagation of electrons in the Galaxy. The parameters defining the anomalous diffusion have been recently determined from the study of nuclei propagation. The predicted electron spectrum is in a good agreement with the measurements. The source spectral index, found from experimental data, in this approach turns out to be equal to 2.95.