19,898 research outputs found

    Spectral features in galactic cosmic rays

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    Recent results by space borne experiments took cosmic ray data to a precision level. These new results are able to challenge the conventional scenario for cosmic ray acceleration and propagation in the Milky Way. In these contributions, written for the XVII Vulcano Workshop, we will give an overview of the latest results of the cosmic ray fluxes, and some possible interpretations will be discussed. These measurements have a common feature, namely the presence of unexpected and still not yet fully understood spectral features.Comment: Proceedings of the XVII Vulcano Worksho

    Dark Matter and SUSY: LEP results

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    The negative outcome of searches for supersymmetry performed at LEP have been used to derive indirect constraints on the parameters of the most plausible supersymmetric candidates for cold dark matter, in particular for the lightest neutralino. We review the basic ideas leading to the present lower limit on the lightest neutralino mass of about 37 GeV, with emphasis on the underlying assumptions.Comment: 12 pages, 8 figures, to appear in the proceedings of Vulcano Workshop 2000: Frontier Objects In Astrophysics And Particle Physics, 22-27 May 2000, Vulcano, Ital

    IceCube Observatory: Neutrinos and the Origin of Cosmic Rays

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    The completed IceCube Observatory, the first km^3 neutrino telescope, is already providing the most stringent limits on the flux of high energy cosmic neutrinos from point-like and diffuse galactic and extra-galactic sources. The non-detection of extra-terrestrial neutrinos has important consequences on the origin of the cosmic rays. Here the current status of astrophysical neutrino searches, and of the observation of a persistent cosmic ray anisotropy above 100 TeV, are reviewed.Comment: Proceedings for the XIV Vulcano Workshop, Vulcano (ME), Italy, May 28 - June 2, 2012; 6 pages, 6 figure
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