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A Suzaku observation of the nucleus of the radio-loud AGN Centaurus A in 2005has yielded a broadband spectrum spanning 0.3 to 250 keV. The net exposuretimes after screening were: 70 ks per X-ray Imaging Spectrometer (XIS) camera,60.8 ks for the Hard X-ray Detector (HXD) PIN, and 17.1 ks for the HXD-GSO. Thehard X-rays are fit by two power-laws of the same slope, absorbed by columns of1.5 and 7 * 10^{23} cm^{-2} respectively. The spectrum is consistent withprevious suggestions that the power-law components are X-ray emission from thesub-pc VLBI jet and from Bondi accretion at the core, but it is also consistentwith a partial covering interpretation. The soft band is dominated by thermalemission from the diffuse plasma and is fit well by a two-temperature VAPECmodel, plus a third power-law component to account for scattered nuclearemission, jet emission, and emission from X-ray Binaries and other pointsources. Narrow fluorescent emission lines from Fe, Si, S, Ar, Ca and Ni aredetected. The Fe K alpha line width yields a 200 light-day lower limit on thedistance from the black hole to the line-emitting gas. Fe, Ca, and S K-shellabsorption edges are detected. Elemental abundances are constrained viaabsorption edge depths and strengths of the fluorescent and diffuse plasmaemission lines. The high metallicity ([Fe/H]=+0.1) of the circumnuclearmaterial suggests that it could not have originated in the relativelymetal-poor outer halo unless enrichment by local star formation has occurred.Relative abundances are consistent with enrichment from Type II and Iasupernovae.

The Suzaku Observation of the Nucleus of the Radio-Loud Active Galaxy Centaurus A: Constraints on Abundances of the Accreting Material