On the e${}^{+}$e${}^{-}$ excesses and the knee of the cosmic ray spectra -- hints of cosmic rays acceleration at young supernova remnants

Hong-Bo Hu, Qiang Yuan, Bo Wang +3

Supernova remnants have long been regarded as sources of the Galactic cosmic rays up to petaelectronvolts, but convincing evidence is still lacking. In this work we explore the com…