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[91.01] Monte Carlo Simulations of High Energy Radiation from Compact Objects

E. Liang, M. Boettcher, D. Lin, I. Smith (Rice University)

We report results of Monte Carlo simulations of x-and-gamma-ray emissions from accreting black holes candidates. As seed photons for Comptonization, we use both internal synchrotron photons and external blackbody photons, either from embedded cool blobs, or a central Shakura-Sunyaev optically thick disk. We include radiation from both thermal and nonthermal leptons. The nonthermal leptons are accelerated stochastically by wave turbulence and cooled by coubomb and radiative processes. Both spectra and energy-dependent time variabilities (power density spectra, hard-lags, coherence etc) will be presented.