| Regis et al. (2014) investigate the presence of radio signals in
dwarf spheroidal (dSph) galaxies induced by non-gravitational interactions of
dark matter (DM) particles. - The image shows one of the fields observed with
the Australia Telescope Compact Array (ATCA) on the left and how it would have
looked like in presence of a bright DM signal (right). Although no extended
emission has been detected, the work allows to set important constraints on the
DM nature and, more in general, on the presence of non-thermal sources in dSph
galaxies. The project paves the way for the SKA, which will be able to close in
on the possibility that DM is in form of weakly interacting massive particles.
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