We report the ASKAP discovery of a new Galactic supernova remnant (SNR) candidate G308.73+1.38, which we name Raspberry. This new SNR candidate has an angular size of 20.7 arcmin × 16.7 arcmin, and we measure a total integrated flux of 407±50 mJy. We estimate Raspberry's most likely diameter of 10−30 pc which would place it at a distance of 3−5 kpc, on the near side of the Milky Way's Scutum−Centaurus Arm. We also find a Stokes−V point source close to the centre of Raspberry with a ∼5σ significance. This point source may be the remaining compact source, a neutron star, or possibly a pulsar, formed during the initial supernova event.
@article{arxiv.2405.03733,
title = {ASKAP$-$EMU Discovery of "Raspberry": a new Galactic SNR Candidate G308.73+1.38},
author = {Sanja Lazarević and Miroslav D. Filipović and Bärbel S. Koribalski and Zachary J. Smeaton and Andrew M. Hopkins and Rami Z. E. Alsaberi and Velibor Velović and Brianna D. Ball and Roland Kothes and Denis Leahy and Adriano Ingallinera},
journal= {arXiv preprint arXiv:2405.03733},
year = {2024}
}