Astrophysical models for the origin of the positron

  title={Astrophysical models for the origin of the positron},
  author={Pasquale Dario Serpico},
Abstract Over the last three years, several satellite and balloon observatories have suggested intriguing features in the cosmic ray lepton spectra. Most notably, the PAMELA satellite has suggested an “anomalous” rise with energy of the cosmic ray positron fraction. In this article, we summarize the global picture emerging from the data and recapitulate the main features of different types of explanations proposed. The perspectives in testing different scenarios as well as inferring some… 

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