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arXiv · 2601.07170

A Study Revealing Physical Attributes of Supernova Remnant in G321.3-3.9

Shaobo Zhang·Xianhuan Lei·Hui Zhu·Xueying Hu·Xiaohong Cui·Wenwu Tian·Haiyan Zhang·Dan Wu
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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.

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Shaobo Zhang, Xianhuan Lei, Hui Zhu, Xueying Hu, Xiaohong Cui, Wenwu Tian, Haiyan Zhang, Dan Wu. 2026-01-12. A Study Revealing Physical Attributes of Supernova Remnant in G321.3-3.9. https://doi.org/10.3847/1538-4357/ae2fc0

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