Core-collapse supernovae in dense environments – particle acceleration and non-thermal emission

Supernova remnants are known to accelerate cosmic-rays from the detection of non-thermal emission in radio waves, X-rays, and gamma-rays. However, ability up PeV energies has yet be demonstrated. The presence cut-offs gamma-ray spectra several young SNRs led idea that might only achieved during first years a remnant's evolution. We use our time-dependent acceleration-code RATPaC study acceleration supernovae expanding into dense environments around massive stars. performed spherically symmetric 1-D simulations which we simultaneously solve transport equations for cosmic-rays, magnetic turbulence, hydrodynamical flow thermal plasma test-particle limit. investigated typical CSM parameters expected RSG LBV stars freely winds accounted strong gamma-gamma-absorption days after explosion. maximum achievable particle energy is limited below 600TeV even largest considered values field mass-loss rates. not surpass 200TeV 70TeV LBVs RSGs experience moderate prior find peak-luminosities consistent with current upper limits evaluated current-generation instruments able detect gamma-rays Type-IIP explosions at distances 60kpc Type-IIn 1.0Mpc. also good agreement between X-ray synchrotron predicted by models range observations.