Reionizing the Universe with self-annihilating DM, constraints from CMB

by Dr Fabio Dr. Iocco (IAP Paris)

Friday 16 Oct 2009, 16:00 → 17:00 Europe/Rome

Aula 8 (Dip. di Fisica - Edificio E. Fermi)

I will show how it is possible to place stringent constraints on high DM self-annihilation cross sections making use of cosmological observables. Current CMB measurements do in fact allow the possibility to limit down to the thermal values for particle masses of few GeV, with constraints that depend only on cosmological paramaters, and are not affected by astrophysical uncertainties, thus resulting sounder constraints than those obtained from galactic multimessenger observables.