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We present newly discovered radio emission in the galaxy cluster Abell 2443which is (1) diffuse, (2) extremely steep spectrum, (3) offset from the clustercenter, (4) of irregular morphology and (5) not clearly associated with any ofthe galaxies within the cluster. The most likely explanation is that thisemission is a cluster radio relic, associated with a cluster merger. We presentdeep observations of Abell 2443 at multiple low frequencies (1425, 325 and 74MHz) which help characterize the spectrum and morphology of this relic. Basedon the curved spectral shape of the relic emission and the presence of smallscale structure, we suggest that this new source is likely a member of theradio phoenix class of radio relics.

An Ultra-Steep Spectrum Radio Relic in the Galaxy Cluster Abell 2443