Gamma-ray and radio tests of the e+e- excess from DM annihilations
  PAMELA and ATIC recently reported an excess in e+e- cosmic rays. We show that if it is due to Dark Matter annihilations, the associated gamma-ray flux and the synchrotron emission produced by e+e- in the galactic magnetic field violate HESS and radio observations of the galactic center and HESS observations of dwarf Spheroidals, unless the DM density profile is significantly less steep than the benchmark NFW and Einasto profiles. 
Gianfranco Bertone, Marco Cirelli, Alessandro Strumia, Marco Taoso