# High Energy Processes in Wolf-Rayet Stars

## TL;DR

This paper reviews high-energy processes in Wolf-Rayet stars, emphasizing X-ray emissions, and presents new Chandra observations of the WR+O binary CQ Cep to test emission models.

## Contribution

It provides a summary of high-energy phenomena in WR stars and offers new observational data to evaluate X-ray emission models.

## Key findings

- Chandra observations of CQ Cep cover a full orbit.
- Data tests existing X-ray emission models.
- Enhanced understanding of WR star winds and emissions.

## Abstract

Wolf-Rayet (WR) stars are massive ($\geq$10 M$_{\odot}$) evolved stars undergoing advanced nuclear burning in their cores, rapidly approaching the end of their lives as supernovae. Their powerful winds enrich the interstellar medium with heavy elements, providing raw material for future generations of stars. We briefly summarize high-energy processes in WR stars, focusing mainly on their X-ray emission. We present new results from Chandra observations of the eclipsing WR+O binary CQ Cep covering a full orbit which stringently test X-ray emission models.