Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-01-18
Astronomy and Astrophysics
Astrophysics
8 pages, proceedings of the 6th International Workshop on the Identification of Dark Matter, Rhodes Island, Greece, September
Scientific paper
The halo of the Miky Way might contain numerous and dense substructures inside which the putative weakly interacting massive particles (suggested as the main constituent of the astronomical dark matter) would produce a stronger annihilation signal than in the smooth regions. The closer the nearest clump, the larger the positron and antiproton cosmic ray fluxes at the Earth. But the actual distribution of these substructures is not known. The predictions on the antimatter yields at the Earth are therefore affected by a kind of cosmic variance whose analysis is the subject of this contribution. The statistical tools to achieve that goal are presented and Monte Carlo simulations are compared to analytic results.
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