  The Rossi X-ray Timing Explorer made a short (10 ks) observation of the radio
galaxy Centaurus A on 14 August 1996. Analysis of the combined 2.5-240 keV
spectrum has revealed a heavily absorbed(NH=9.42+/-0.24 e22 cm-2) primary power
law (index=1.86+/-0.015) and an iron line due to fluorescence of cold matter
(EW=162+/-25 eV). Flux from either a jet, primary flux scattered into the line
of sight, or primary flux seen through a partial absorber was not required. The
iron line width is unresolved at the 95% confidence level (sigma < 0.54 keV).
No significant variability in the iron line flux is seen from measurements over
the last two decades, while the overall continuum flux varied by more than a
factor of four, which implies that the line emission region is distant from
that of the primary emission. While radio-quiet Seyfert galaxies exhibit
spectral components attributable to Compton reflection from cold matter, Cen A
reveals no such component (exposed solid angle ratio < 0.09). This supports
unified models of active galaxies that have little difference between Seyfert 2
and low luminosity radio galaxies
