# Galactic positrons and electrons from astrophysical sources and dark matter

## TL;DR

This paper investigates the origins of cosmic ray electrons and positrons, comparing astrophysical sources and dark matter, using a two-zone propagation model to analyze recent experimental data and uncertainties.

## Contribution

It introduces a comprehensive analysis of cosmic ray origins considering multiple sources and propagation uncertainties within a validated two-zone model.

## Key findings

- Dark matter annihilation can explain some positron excess
- Supernova remnants contribute significantly to electron flux
- Propagation uncertainties affect source contribution estimates

## Abstract

A very interesting puzzle about the origin of electron and positron cosmic rays is deduced from the latests experimental results. We model the propagation of such cosmic rays in terms of a successfully tested two--zone propagation model. Several theoretical uncertainties -- like ones related to propagation -- are considered to study different types of electron and positron sources: dark matter annihilation, secondary production, and supernova remnants.