---
author:
- 'J. Devin$^{(1)}$'
- 'F. Acero$^{(2)}$'
- 'J. Ballet$^{(2)}$'
- 'J. Schmid$^{(2)}$'
bibliography:
- 'article.bib'
date: 'Received: 13 March 2018 / Accepted: 25 May 2018'
title: 'Disentangling hadronic from leptonic emission in the composite SNR G326.3$-$1.8'
---

[G326.3$-$1.8 (also known as MSH 15$-$5*6*) has been detected in radio as a middle-aged composite supernova remnant (SNR) consisting of an SNR shell and a pulsar wind nebula (PWN), which has been crushed by the SNR’s reverse shock. Previous $\gamma$-ray studies of SNR G326.3$-$1.8 revealed bright and extended emission with uncertain origin. Understanding the nature of the $\gamma$-ray emission allows probing the population of high-energy particles (leptons or hadrons) but can be challenging for sources of small angular extent.]{} [With the recent $\textit{Fermi}$ Large Area Telescope data release Pass 8 providing increased acceptance and angular resolution, we investigate the morphology of this SNR to disentangle the PWN from the SNR contribution. In particular, we take advantage of the new possibility to filter events based on their angular reconstruction quality. ]{} [We perform a morphological and spectral analysis from 300 MeV to 300 GeV. We use the reconstructed events with the best angular resolution (PSF3 event type) to separately investigate the PWN 