New insights on supernova remnants and HII regions in M82
Abstract
The nearby (d=3.6 Mpc) starburst galaxy M82 has been studied for several decades by very long baseline interferometry (VLBI) networks such as e-MERLIN and the European VLBI Network (EVN). The numerous supernova remnants (SNRs), HII regions and other exotic transients make it a perfect laboratory for studying stellar evolution and the interstellar medium (ISM). Its proximity provides a linear resolution of 17 pc/arcsec, enabling decadal-time-scale variability and morphology studies of the tens of compact radio sources. In this proceedings, we describe new techniques developed in the last ten years that provide deeper, more robust imaging, enable in-band spectral index mapping, and allow wider fields of view to be imaged to find new radio sources.
Keywords
Cite
@article{arxiv.2504.17500,
title = {New insights on supernova remnants and HII regions in M82},
author = {D. Williams-Baldwin and G. Lucatelli and T. W. B. Muxlow and R. J. Beswick and S. W. Shungube and R. Lumpkin-Robbins and M. K. Argo and D. M. Fenech and N. Kimani and J. Radcliffe},
journal= {arXiv preprint arXiv:2504.17500},
year = {2025}
}
Comments
4 pages, 4 figures, published in Proceedings of the 16th EVN Symposium, Ed. E. Ros, P. Benke, S.A. Dzib, I. Rottmann, & J.A. Zensus, Bonn: Max-Planck-Institut f\"ur Radioastronomie, 2024, pages 31-34, this this https URL