Astrophysical Signatures of Dark Matter Annihilation

We show that the rise in the PAMELA local positron spectrum above 10 GeV, the excess electrons centered on 650 GeV in the ATIC local electron spectrum, and the anomalously hard synchrotron radiation centered on the Galactic center that is observed by WMAP (the WMAP "haze") are all consistent with a scenario in which the dark matter is composed of self-annihilating, weakly interacting massive particles (WIMPs) with a mass of roughly 700+ GeV. Furthermore, similar annihilation cross sections are required for all of these signals indicating a potentially common origin. In addition, not only is the spectrum of the haze from 23 to 33 GHz consistent with numerous annihilation channels, but the existence of the haze electrons implies an inverse Compton (scattering of starlight photons by the electrons which produce the haze) signal towards the Galactic center which may be observable by the Fermi Gamma-Ray Space Telescope.