A Study Revealing Physical Attributes of Supernova Remnant in G321.3-3.9
Astrophysics of Galaxies
2026-02-02 v1
Abstract
We present a radio analysis of the recently identified supernova remnant G321.3-3.9 using archival multi-wavelength data spanning 88-2304 MHz. The source exhibits an elliptical shell-like morphology (1.3 deg x 1.7 deg) and a relatively flat non-thermal spectral index of alpha = -0.40 +/- 0.03. The distance is estimated using both the Sigma-D relation (1.6-2.9 kpc) and tentative associations with HI structures, the latter suggesting a near-side solution of 2.5-3.3 kpc, though the physical connection remains uncertain.
Cite
@article{arxiv.2601.07170,
title = {A Study Revealing Physical Attributes of Supernova Remnant in G321.3-3.9},
author = {Shaobo Zhang and Xianhuan Lei and Hui Zhu and Xueying Hu and Xiaohong Cui and Wenwu Tian and Haiyan Zhang and Dan Wu},
journal= {arXiv preprint arXiv:2601.07170},
year = {2026}
}
Comments
9 pages, 5 figures, 1 tables. Accepted for publication in ApJ