Dark Matter indirect detection: theoretical uncertainties GDR SUSY 27-IV-2008 Strasbourg GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Plan Indirect detection : the e+ chanel Positrons propagation Primary positrons Secondary positrons GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
There is something about e+ GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE The propagation model GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Diffusion equation GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Diffusion equation GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Diffusion parameters K = K0 E : diffusion coefficient L : half-thickness of the diffusion zone GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Diffusion parameters Constrains from B/C by : D. Maurin et alii GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Primary positrons The source term The calculated flux Positrons from dark matter annihilation in the galactic halo: Theoretical uncertainties with R. Lineros, F. Donato, N. Fornengo and P. Salati Phys. Rev. D77 063527 arXiv:0712.2312 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE The propagation model GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Influence of the halo profile GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Influence of the channel GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Total flux GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Positron fraction GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Secondary positrons The source term The calculated flux Positron background: theoretical uncertainties with R. Lineros, J. Lavalle, P. Salati, F. Donato, N. Fornengo and R. Taillet (in preparation) GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Cross sections GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Cross sections GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Source term GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE Flux at the Earth GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE What is next ? Diffusive reacceleration and other « negligible » terms. Data !!! Fit by specific sets of parameters => constraints on DM (?) GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE