TeV Electron Spectrum for Probing Cosmic-Ray Escape from a Supernova Remnant

Understand

One of the most essential but uncertain processes for producing cosmic-rays (CRs) and their spectra is how accelerated particles escape into the interstellar space.

• We propose that the CR electron spectra at >~TeV energy can provide a direct probe of the CR escape complementary to the CR nuclei and gamma-rays.
• We calculate the electron spectra from a young pulsar embedded in the supernova remnant (SNR), like Vela, taking into account the energy-dependent CR escape.
• SNRs would accelerate and hence confine particles with energy up to 10^{15.5}eV.