Supernova remnants interacting with molecular clouds as seen with H.E.S.S

TL;DR

This paper reviews H.E.S.S. observations of supernova remnants interacting with molecular clouds, highlighting the challenges and recent results in detecting gamma-ray emissions from these systems.

Contribution

It provides an update on the status of TeV gamma-ray observations of SNR-MC systems, emphasizing new findings and observational challenges.

Findings

Limited detections of SNR-MC systems at TeV energies.

H.E.S.S. observations have advanced understanding of gamma-ray emissions.

Challenges remain in detecting and confirming SNR-MC interactions at high energies.

Abstract

About 30 Galactic supernova remnants (SNRs) are thought to be physically associated with molecular clouds (MCs). These systems are prime \g-ray source candidates as the accelerated particles from shock fronts collide with the surrounding high-density medium thus emitting gamma-rays through hadronic interactions. However only a handful of such interacting SNRs are detected at TeV energies. We report the current status of the High Energy Stereoscopic System (H.E.S.S.) observations towards these SNR-MC systems, with a particular emphasis on the latest results.