Fabio Iocco, Miguel Pato, Gianfranco Bertone, Philippe Jetzer
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, \rho_0=0.20-0.56 GeV/cm^3 at
1\sigma, that is found to be compatible with estimates in the literature based
on different techniques.
View original:
http://arxiv.org/abs/1107.5810
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