Precision Fe Kα and Fe Kβ Line Spectroscopy of the Seyfert 1.9 NGC 2992 with Suzaku

Abstract We present detailed time-averaged X-ray spectroscopy in the 0.5-10 keV band of the Seyfert 1.9 galaxy NGC 2992 with the Suzaku X-ray Imaging Spectrometers (XIS). The source had a factor 3 higher 2-10 keV flux (N 1.2 x lo-'' erg s-l) than the historical minimum and a factor 7 less than the historical maximum. The XIS spectrum of NGC 2992 can be described by several components. There is a primary continuum, modeled as a power-law with a photon index of I? = 1.57-0.03 $0.06 that is obscured by a Compton-thin absorber with a column density of 8.01::; x lo2' ~m-~. There is another, weaker, unabsorbed power-law component (modeled with the same slope as the primary), that is likely to be due to the primary continuum being electron- scattered into our line-of-sight by a region extended on a scale of hundreds of parsecs. We measure the Thomson depth of the scattering zone to be re, = 0.072 + 0.021. An optically-thin thermal continuum emission component, which probably originates in 1