  V959 Mon (Nova Mon 2012) was first detected by the Fermi Large Area Telescope
in June 2012, as a transient gamma-ray source. Subsequent optical observations
showed that this gamma-ray emission was due to a classical nova explosion.
Multi-frequency observations of V959 Mon with the VLA between June and
September 2012 revealed dramatic brightening, and a spectrum that steepened
with increasing frequency. High resolution radio images of V959 Mon using
e-MERLIN are presented here, at six epochs between September 2012 and February
2014 which show morphological evolution of the source. While early e-MERLIN
observations of V959 Mon show an east-west elonga- tion in the ejecta
morphology, subsequent observations suggest that the ejecta become elongated in
the north-south direction. Our high-resolution observations of this sur-
prising evolution in the structure of V959 Mon can assist us in further
understanding the behaviour and morphology of nova ejecta.
