We present observations between 1.4 and 18 GHz confirming that G64 { \cdot } 5 + 0 { \cdot } 9 is new Galactic shell supernova remnant , using the Very Large Array and the Arcminute Microkelvin Imager .
The remnant is a shell \simeq 8 ′ in diameter with a spectral index of \alpha = 0.47 \pm 0.03 ( with \alpha defined such that flux density S varies with frequency \nu as S \propto \nu ^ { - \alpha } ) .
There is also emission near the centre of the shell , \simeq 1 ′ in extent , with a spectral index of \alpha = 0.81 \pm 0.02 .
We do not find any evidence for spectral breaks for either source within our frequency range .
The nature of the central object is unclear and requires further investigation , but we argue that is most unlikely to be extragalactic .
It is difficult to avoid the conclusion that it is associated with the shell , although its spectrum is very unlike that of known pulsar wind nebulae .