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arXiv · 1004.1118

Antimatter spectra from a time-dependent modeling of supernova remnants

M. Kachelriess·S. Ostapchenko·R. Tomas
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Abstract

We calculate the energy spectra of cosmic rays (CR) and their secondaries produced in a supernova remnant (SNR), taking into account the time-dependence of the SNR shock. We model the trajectories of charged particles as a random walk with a prescribed diffusioncoefficient, accelerating the particles at each shock crossing. Secondary production by CRs colliding with gas is included as a Monte Carlo process. We find that SNRs produce less antimatter than suggested previously: The positron/electron ratio and the antiproton/proton ratio are a few percent and few $\times 10^{-5}$, respectively. Both ratios do not rise with energy.

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M. Kachelriess, S. Ostapchenko, R. Tomas. 2010-05-05. Antimatter spectra from a time-dependent modeling of supernova remnants. https://doi.org/10.1088/1742-6596%2F259%2F1%2F012092

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