Abstract
We study the potential of GLAST for unveiling particle dark matter properties withgamma-ray observations of the galactic center region. We present full GLASTsimulations including all gamma-ray sources known to date in a region of4° around the galactic center, in addition to the diffuse gamma-ray background and to thedark matter signal. We introduce DMFIT, a tool that allows one to fit gamma-rayemission from pair annihilation of generic particle dark matter models and to extractinformation on the mass, normalization and annihilation branching ratios intoStandard Model final states. We assess the impact and systematic bias inducedby background modeling and theoretical priors on the reconstruction of darkmatter particle properties. Our detailed simulations demonstrate that for some wellmotivated supersymmetric dark matter setups with one year of GLAST data it will bepossible not only to significantly detect a dark matter signal over background,but also to estimate the dark matter mass and its dominant pair annihilationmode.
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