| Description |
Using 43 months of public Fermi LAT data, we find in regions close to the Galactic center a 4.6 sigma excess that is not inconsistent with a gamma-ray line from dark matter annihilation at around 130 GeV. When taking into account the look-elsewhere effect the significance of the observed signature is 3.3 sigma. If interpreted in terms of dark matter particles annihilating into a photon pair, the observations imply a partial annihilation cross-section of about ~ 10^-27 cm^3 s^-1. I will discuss details of the statistical analysis, caveats, interpretations and future prospects.
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