We present radio-continuum observations of the Galactic supernova remnant ( SNR ) candidate , G308.3–1.4 , made with the Australia Telescope Compact Array , Molonglo Observatory Synthesis Telescope and the Parkes radio-telescope .
Our results combined with Chandra X-ray images confirm that G308.3–1.4 is a bona fide SNR with a shell morphology .
The SNR has average diameter of D = 34 \pm 19 pc , radio spectral index of \alpha = -0.68 \pm 0.16 and linear polarisation of 10 \pm 1 \% ; We estimate the SNR magnetic field B \approx 29 ~ { } \mu \mbox { G } .
Employing a \Sigma - D relation , we estimate a distance to G308.3–1.4 of d = 19 \pm 11 ~ { } \mbox { kpc } .
The radio morphology , although complex , suggests a smaller size for the SNR than previously implied in an X-Ray study .
These results imply that G308.3–1.4 is a young to middle-aged SNR in the early adiabatic phase of evolution .