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Several groups have reported a possible excess of primary electrons at highenergies with the joint fit of the positron fraction and totalelectron/positron spectra. With the latest release of high-precisionelectron/positron spectra measured by AMS-02, we further confirm this excess byfitting $\Delta\Phi$ $\rm(i.e., \Phi_{e^-}-\Phi_{e^+})$ data in this work. Thenwe investigate the contribution of a single nearby supernova remnant to theprimary electron excess and find that Monogem can reasonably account for thisexcess. Moreover, we predict that the electron spectrum may harden again at afew TeVs due to Vela's contribution. DAMPE, which can accurately measureelectrons at TeV scale, is expected to provide the robust test of this newspectral feature in the near future. Finally, we fit the proton spectrum dataof DAMPE with Monogem or Loop I. We find that both the primary electron excessand the proton spectral bump could be mainly generated by Monogem.

Explanation of nearby SNRs for primary electron excess and proton spectral bump