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Iocco, Fabio; Pato, Miguel; Bertone, Gianfranco; Jetzer, Philippe
Journal of cosmology and astroparticle physics, 11/2011, Volume: 2011, Issue: 11Journal Article
We show that current microlensing and dynamical observations of the Galaxy permit to set interesting constraints on the Dark Matter local density and profile slope towards the galactic centre. Assuming state-of-the-art models for the distribution of baryons in the Galaxy, we find that the most commonly discussed Dark Matter profiles (viz. Navarro-Frenk-White and Einasto) are consistent with microlensing and dynamical observations, while extreme adiabatically compressed profiles are robustly ruled out. When a baryonic model that also includes a description of the gas is adopted, our analysis provides a determination of the local Dark Matter density, ρ{sub 0} = 0.20−0.56 GeV/cm{sup 3} at 1σ, that is found to be compatible with estimates in the literature based on different techniques.
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