The Suzaku Observation of NGC3516: Complex Absorption and the Broad and Narrow FeK Lines

• Published in: Publications of the Astronomical Society of Japan 2008-02, Vol.60 (sp1), p.S277-S291
• Main Authors: Markowitz, Alex, Reeves, James N., Miniutti, Giovanni, Serlemitsos, Peter, Kunieda, Hideyo, Yaqoob, Tahir, Fabian, Andrew C., Fukazawa, Yasushi, Mushotzky, Richard, Okajima, Takashi, Gallo, Luigi C., Awaki, Hisamitsu, Griffiths, Richard E.
• Format: Article
• Language: English
• ISSN: 0004-6264; 2053-051X
• DOI: 10.1093/pasj/60.sp1.S277

We present results from a 150ks Suzaku observation of the Seyfert 1.5 NGC3516 in 2005 October. The source was in a relatively highly absorbed state. Our best-fit model is consistent with the presence of a low-ionization absorber having a column density near 5 $\times$ 10 $^{22}$ cm $^{-2}$ and covering most of the X-ray continuum source (covering fraction 96-100%). A high-ionization absorbing component, which yields a narrow absorption feature consistent with FeXXVIK, is confirmed. A relativistically broadened FeK $\alpha$ line was required in all fits, even after the complex absorption was taken into account; an additional partial-covering component is an inadequate substitute for the continuum curvature associated with the broad Fe line. A narrow FeK $\alpha$ emission line has a velocity width consistent with the Broad Line Region. The low-ionization absorber may be responsible for producing the narrow FeK $\alpha$ line, though a contribution from additional material out of the line of sight is possible. We include in our model soft band emission lines from He- and H-like ions of N, O, Ne, and Mg, consistent with photo-ionization, though a small contribution from collisionally-ionized emission is possible.