Interpretation of TeV electron and positron data with a single source

Abstract

Abstract In recent years, many experiments, for example, like AMS-02, CALET, DAMPE, HESS and Fermi-LAT, have enhanced their precision in detecting the flux of cosmic rays, especially for high energy particles. We aim to interpret the electrons and positrons data above 1 TeV by using a model considering supernova remnants (SNRs) and the single pulsar as the major sources of electrons and positrons. We explain the rationality of applying the continuous scenario model for the single pulsar. We use the data above and choose seven parameters (d, t, γe, Etot, Q0,SNR, γSNR, Ec,SNR ) to perform the best fit for electrons and positrons flux at Earth. We perform the fit for the data above 1 Tev and 10 GeV to analyze how the single pulsar and SNRs contribute to the total flux. We also find that the fit ranges we choose for the parameters have a significant influence on the result. By considering this effect, a further analysis on the best fit by constraining γe and Ec,SNR shows that the pulsar PSR B0656+14 can provide most of the flux to the data above 1 TeV.