A Study Revealing the Physical Attributes of the Supernova Remnant in G321.3–3.9
Abstract
Abstract We present a radio analysis of the recently identified supernova remnant G321.3–3.9 using archival multiwavelength data spanning 88–2304 MHz. The source exhibits an elliptical shell-like morphology (1 . ° 3 × 1 . ° 7) and a relatively flat nonthermal spectral index of α = −0.40 ± 0.03. The distance is estimated using both the Σ– D relation (1.6–2.9 kpc) and tentative associations with H I structures, the latter suggesting a near-side solution of 2.5–3.3 kpc, though the physical connection remains uncertain.
Fields of Study & Subjects
Astrophysics and Cosmic Phenomena
Gamma-ray bursts and supernovae
Astrophysics and Star Formation Studies
Publication details
- Journal / source
- The Astrophysical Journal
- Volume
- 997
- Issue
- 2
- Pages
- 294–294
- Publication date
- 29 January 2026