A Critical Reevaluation of Radio Constraints on Annihilating Dark Matter
  A number of groups have employed radio observations of the Galactic center to
derive stringent constraints on the annihilation cross section of weakly
interacting dark matter. In this paper, we show that electron energy losses in
this region are likely to be dominated by inverse Compton scattering on the
interstellar radiation field, rather than by synchrotron, considerably relaxing
the constraints on the dark matter annihilation cross section compared to
previous works. Strong convective winds, which are well motivated by recent
observations, may also significantly weaken synchrotron constraints. After
taking these factors into account, we find that radio constraints on
annihilating dark matter are orders of magnitude less stringent than previously
reported, and are generally weaker than those derived from current gamma-ray
observations.
