Julio Navarro
Grupo Investigaciones Astronomía Teórica Experimental (IATE), Obs. Astron. (Córdoba, Argentine)
Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris
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| « The Aquarius Project: Dark Matter under a Numerical Microscope » |
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Julio Navarro |
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In our current paradigm for the growth of structure, dark matter halos are the basic units of non-linear structures in the present Universe. I will report results from the latest numerical simulations of galaxy-scale dark halos. These state-of-the-art simulations achieve resolutions high enough that a number of previously pending questions regarding the structure and substructure of dark matter halos can now be addressed with confidence. Tests demonstrate detailed convergence for (sub)structures well below a millionth the mass of the final system, below the mass scale associated with even the faintest galaxies known. I will discuss applications of this simulation series, such as accurate forecasts of the expected signal both in Earth-bound experiments designed to detect dark matter directly, in indirect detection experiments like Fermi which attempt to image dark matter annihilation radiation at gamma-ray wavelengths, as well as predictions for the abundance, structure, and kinematics of satellite galaxies in the Milky Way's halo.
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vendredi 30 avril 2010 - 11:00 Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |