Séminaire / Seminar GReCO |
| « Testing Dark Matter distribution with local astrophysical observations » |
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Fabio Iocco |
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Current LCDM cosmological paradigm describes most of the Universe's matter content as made of an unknown, non-electromagnetically interacting, non-baryonic (dark) component. The nature of the Dark Matter particle is studied through a host of diverse technique, including direct production at LHC, underground recoil experiments (direct detection), and indirect probes, typically of astrophysical nature.
The information coming from astrophysics is therefore of fundamental importance in determining the uncertainties (and normalisations) associated to indirect and direct detection techniques. After a brief introduction, in this talk I will describe how the combining of different types of local astrophysical observables can be used to obtain information on the Dark Matter (DM) in our Galaxy. Microlensing observations of the galactic bulge permit to normalise the (observationally inferred) models of stars in our Galaxy, and compared with observed rotation curve (RC) of the Milky Way, it is possible to constrain the local DM density and more mildly the DM profile of our galaxy's halo. This technique offers results which are quantitatively competitive and qualitatively complementing the results obtained with other techniques. |
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lundi 7 avril 2014 - 14:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |