Indirect Detection of Dark Matter

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Speaker: Dr Nicole Bell (University of Melbourne)
Date: 19th November 2010

We discuss prospects for indirect detection of dark matter, via dark matter annihilation or decay in our Galaxy.  We consider the production of gamma rays, neutrinos, or electron/positron final states, and use observational data to constrain the dark matter annihilation or decay processes in a model independent way. We discuss the implication of our bounds for models which seek to use annihilation or decay to modify the structure of dark matter halos, or remedy small scale structure problems. We also examine radiative corrections to the lowest order decay/annihilation modes, namely bremsstrahlung and electroweak-bremsstralung, and describe scenarios in which they which make important (and in some cases, dominant) contributions to the observable fluxes. We discuss these annihilation/decay modes in light of recent cosmic ray positron and antiproton data.