Gamma ray bursts (GRBs) are astronomical phenomena detected at highest energies. The gamma photons carry energies on the order of mega-electronovolts and arrive to us from point-like sources that uniformly distributed sky. A typical burst has a form pulse lasts for about minute. As Earth atmosphere is not transparent very high energy radiation, by means telescopes onboard satellites placed orbi...

We consider a model for neutralino dark matter candidates arising in anomaly-mediated supersymmetry breaking schemes, and examine its testability through the search for exotic cosmic rays produced by neutralino pair annihilations in the dark halo of the Galaxy. We find that the model is already constrained by available antiprotons and positrons measurements and may be further tested in upcoming...