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Adriani, P. Carlson, P. Hofverberg, P. Papini, P. Picozza, P. Spillantini, R. Bellotti, R. Sparvoli, S. A. Voronov, S. Bottai, S. B. Ricciarini, S. Orsi, S. V. Koldashov, S. Y. Krutkov, V. Bonvicini, V. Di Felice, V. G. Zverev, V. Malvezzi, V. V. Mikhailov, W. Menn, Y. I. Stozhkov, Y. T. Yurkin","submitted_at":"2008-10-28T09:32:34Z","abstract_excerpt":"Positrons are known to be produced in interactions between cosmic-ray nuclei and interstellar matter (\"secondary production\"). Positrons may, however, also be created by dark matter particle annihilations in the galactic halo or in the magnetospheres of near-by pulsars. The nature of dark matter is one of the most prominent open questions in science today. An observation of positrons from pulsars would open a new observation window on these sources. 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