Abstract
In the frame of the γ-ray pulsar outer gap model, e±pairs in the pulsar magnetosphere are produced by the cascade of e±pairs through synchrotron radiation of the return current from theouter gap. These pairs are accelerated mono-energetically to relativisticenergies in the pulsar wind driven by low-frequency electromagnetic waves.Using Monte Carlo simulations, we generate a sample of the matureγ-ray pulsars in our Galaxy and calculate the positron productionrate from these pulsars. With a simple leaky box model, we calculate theratio of cosmic-ray positron to total electrons. Our result indicates that the pulsarcontribution to the cosmic-ray positron peaks at about 40 GeV and theobserved e+/(e- + e+) ratio can be explained by this model.
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