Note on the dark matter explanation of the ARCADE excess and AMS data
  In this paper we show that positron data from AMS seems to rule out the
explanation of the ARCADE isotropic radio background excess in terms of
self-annihilating dark matter. In earlier works it was found that leptonic
annihilation channels of light dark matter provide a good fit to the excess due
to synchrotron emission of the final state particles. However, limits on the
self-annihilation cross-section derived from the positron data of AMS now
severely constrain light self-annihilating dark matter and cross-sections below
that of a thermal relic are already tested for leptonic annihilation channels.
Combining these two results, we conclude that an explanation of the excess in
the radio background in terms of self-annihilating dark matter is excluded.
