Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:We calculate the energy spectra of cosmic rays (CR) and their secondaries produced in a super-
nova 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 diffusion coefficient, 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 Fe+ /Fe++e− and the antiproton/proton ratio Fp ̄
/Fp+p ̄
are a few percent
and few × 10−5 , respectively. Moreover, the obtained positron/electron ratio decreases with energy,
while the antiproton/proton ratio rises at most by a factor of two above 10 GeV.