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We construct an X-ray spectral model of reprocessing by a torus in an activegalactic nucleus (AGN) with a Monte Carlo simulation framework MONACO. Twotorus geometries of smooth and clumpy cases are considered and compared. Inorder to reproduce a Compton shoulder accurately, MONACO includes not only freeelectron scattering but also bound electron scattering. Raman and Reyleighscattering are also treated, and scattering cross sections dependent onchemical states of hydrogen and helium are included. Doppler broadening byturbulence velocity can be implemented. Our model gives consistent results withother available models, such as MYTorus, except for differences due todifferent physical parameters and assumptions. We studied the dependence ontorus parameters for Compton shoulder, and found that a intensity ratio ofCompton shoulder to line core mainly depends on the column density, inclinationangle, and metal abundance. For instance, an increase of metal abundance makesthe Compton shoulder relatively weak. Also, shape of Compton shoulder dependson the column density. Furthermore, these dependences become different betweensmooth and clumpy cases. Then, we discuss the possibility of ASTRO-H SXSspectroscopy of Compton shoulder in AGN reflection spectra.

X-ray Spectral Model of Reprocessing by Smooth and Clumpy Molecular Tori in Active Galactic Nuclei with the MONACO framework