Spatially integrated spectral energy distribution of Tycho. The curves show synchrotron emission, thermal electron bremsstrahlung and pion decay as calculated within our model (see text for details). The experimental data are, respectively: radio from Reynolds & Ellison (1992); X-rays from Suzaku (courtesy of Toru Tamagawa), GeV gamma-rays from Fermi-LAT (Giordano et al. 2012) and TeV gamma-rays from VERITAS (Acciari et al. 2011). Both Fermi-LAT and VERITAS data include only statistical error at 1σ.