  We use data from the pilot observations of the EMU/POSSUM surveys to study
the "missing supernova remnant (SNR) problem", the discrepancy between the
number of Galactic SNRs that have been observed and the number that are
estimated to exist. The Evolutionary Map of the Universe (EMU) and the
Polarization Sky Survey of the Universe's Magnetism (POSSUM) are radio sky
surveys that are conducted using the Australian Square Kilometre Array
Pathfinder (ASKAP). We report on the properties of 7 known SNRs in the joint
Galactic pilot field, with an approximate longitude and latitude of
323$^\circ\leq$ l $\leq$ 330$^\circ$ and -4$^\circ\leq$ b $\leq$ 2$^\circ$
respectively, and identify 21 SNR candidates. Of these, 4 have been previously
identified as SNR candidates, 3 were previously listed as a single SNR, 13 have
not been previously studied, and 1 has been studied in the infrared. These are
the first discoveries of Galactic SNR candidates with EMU/POSSUM and, if
confirmed, they will increase the SNR density in this field by a factor of 4.
By comparing our SNR candidates to the known Galactic SNR population, we
demonstrate that many of these sources were likely missed in previous surveys
due to their small angular size and/or low surface brightness. We suspect that
there are SNRs in this field that remain undetected due to limitations set by
the local background and confusion with other radio sources. The results of
this paper demonstrate the potential of the full EMU/POSSUM surveys to uncover
more of the missing Galactic SNR population.
