Time evolution of intensity maps of type-Ic (top) and type-IIP (bottom) SNRs at 1 TeV due to pion-decay (PD) and inverse Compton (IC), at 3 keV (SX) and at 1.4 GHz (SR) due to synchrotron radiation. The left column is for the age of 400 years, the middle column at 1000 years, and the right column at 1975 years. The scale is linear from zero to maximum in each image. All images are normalized by the FS radius, R_FS, at the respective time.