Spectral energy distributions (SEDs) of the Bondi explosion. Nonthermal emission from the explosion is characterized by SEDs peaking in the UV and TeV bands. Synchrotron emission is shown in purple, and external inverse Compton scattering is in green. The flare decays with time as t^−6/5, but the TeV photons are absorbed by pair production. We show the mean SEDs (Shang et al. 2011) of radio-quiet (dotted blue) and radio-loud (dotted red) quasars for M_• = 10⁸M_⊙ and ﹩\dot{M}=1﹩ (its bolometric luminosity of 10⁴⁵ erg s⁻¹). We scale the mean quasar SED to match L₅₁₀₀ ≈ 0.1L_bol. The luminosities at the synchrotron and inverse Compton peak frequency are ∼0.5(L_IC, L_syn) for relativistic electrons with n_e = 2.