  We study the extent to which the decay of cold dark matter axions can be
probed with forthcoming radio telescopes such as the Square Kilometer Array
(SKA). In particular we focus on signals arising from dwarf spheroidal
galaxies, where astrophysical uncertainties are reduced and the expected
magnetic field strengths are such that signals arising from axion decay may
dominate over axion-photon conversion in a magnetic field. We show that with
$\sim100$ hours of observing time, SKA could improve current sensitivity by a
factor of about five.
