The beaming pattern and spectrum of inverse Compton radiation in blazars

摘要: By including Klein-Nishina effects, we generalize previous calculations of the beaming pattern photons produced by inverse Compton scattering. For an isotropic distribution soft upscattered nonthermal electrons with a power-law density embedded in plasma moving relativistic bulk speed show that observed radiation intensity is proportional to D^(3+p), where D Doppler boosting factor, and p electron index. This agrees computations performed Thomson limit, spectral index a=(p-1)/2 D^(4+2a). Independent D, effects limit location peak energy such e_{peak} less than 1/e_0, e_0 seed units mc^2. Assuming originate broad line region, demonstrate GeV emission blazars significantly modified spectrum being softer calculated limit. We further change across can exceed value 0.5 predicted The model spectra agree OSSE COMPTEL limits on this break without invoking differential absorption at edge gamma-ray photosphere.