G306.3-0.9: A newly discovered young galactic supernova remnant
Abstract
We present X-ray and radio observations of the new Galactic supernova remnant (SNR) G306.3-0.9, recently discovered by Swift. Chandra imaging reveals a complex morphology, dominated by a bright shock. The X-ray spectrum is broadly consistent with a young SNR in the Sedov phase, implying an age of 2500 yr for a distance of 8 kpc, plausibly identifying this as one of the 20 youngest Galactic SNRs. Australia Telescope Compact Array (ATCA) imaging reveals a prominent ridge of radio emission that correlates with the X-ray emission. We find a flux density of ~ 160 mJy at 1 GHz, which is the lowest radio flux recorded for a Galactic SNR to date. The remnant is also detected at 24microns, indicating the presence of irradiated warm dust. The data reveal no compelling evidence for the presence of a compact stellar remnant.
Cite
@article{arxiv.1303.3546,
title = {G306.3-0.9: A newly discovered young galactic supernova remnant},
author = {Mark Reynolds and Shyeh Loi and Tara Murphy and Jon Miller and Dipankar Maitra and Kayhan Gultekin and Neil Gehrels and Jamie Kennea and Michael Siegel and Jonathan Gelbord and Paul Kuin and Vanessa Moss and Sarah Reeves and William Robbins and Bryan Gaensler and Rubens Reis and Robert Petre},
journal= {arXiv preprint arXiv:1303.3546},
year = {2015}
}
Comments
6 pages, 4 figures, 1 table, formatted using emulateapj.cls. Accepted for publication in ApJ