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Multiple lines of evidence indicate an anomalous injection of high-energy e+-in the Galactic halo. The recent $e^+$ fraction spectrum from the Payload forAntimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) shows asharp rise up to 100 GeV. The Fermi Gamma-ray Space Telescope has found asignificant hardening of the e+e- cosmic ray spectrum above 100 GeV, with abreak, confirmed by HESS at around 1 TeV. The Advanced Thin IonizationCalorimeter (ATIC) has also detected detected a similar excess, falling back tothe expected spectrum at 1 TeV and above. Excess microwaves towards thegalactic center in the WMAP data are consistent with hard synchrotron radiationfrom a population of 10-100 GeV e+- (the WMAP ``Haze''). We argue that darkmatter annihilations can provide a consistent explanation of all of these data,focusing on dominantly leptonic modes, either directly or through a new lightboson. Normalizing the signal to the highest energy evidence (Fermi and HESS),we find that similar cross sections provide good fits to PAMELA and the Haze,and that both the required cross section and annihilation modes are achievablein models with Sommerfeld-enhanced annihilation. These models naturally predictsignificant production of gamma rays in the galactic center via a variety ofmechanisms. Most notably, there is a robust inverse-Compton scattered (ICS)gamma-ray signal arising from the energetic electrons and positrons, detectableat Fermi/GLAST energies, which should provide smoking gun evidence for thisproduction.

The Case for a 700+ GeV WIMP: Cosmic Ray Spectra from PAMELA, Fermi and ATIC