Nuclear lines revealing the injection of cosmic rays in supernova remnants
Nuclear lines revealing the injection of cosmic rays in supernova remnants
At high energies, the hadronic origin of gamma rays from supernova remnants is still debated.Assuming the observed gamma-rays from the Wolf-Rayet supernova remnant Cas A are due to accelerated protons and ions, we predict the nuclear de-excitation line emission arising from interactions with the heavy elements in the supernova ejecta.This …