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arXiv 0710.0382astro-ph
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NGC 3516的朱雀观测:复合吸收和宽、窄Fe-K线

The Suzaku Observation of NGC 3516: Complex Absorption and the Broad and Narrow Fe K Lines

A. Markowitz, J. N. Reeves, G. Miniutti, P. Serlemitsos, H. Kunieda, T. Yaqoob, A. C. Fabian, Y. Fukazawa, R. Mushotzky, T. Okajima, L. C. Gallo, H. Awaki, R. E. Griffiths

摘要:

我们目前的结果,从150千秒朱雀观测的塞弗特1.5 NGC 3516在2005年10月。源处于相对高度吸收的状态。我们的最佳拟合模型与低电离吸收体的存在相一致,低电离吸收体的柱密度接近5 * 10^{22} cm^{-2},并且覆盖了大部分X射线连续谱源(覆盖率为96-100%)。一个高电离吸收组件,产生一个窄的吸收功能与铁K XXVI一致,被确认。一个相对论加宽的Fe K α线是需要在所有的配合,即使在复杂的吸收被考虑在内,一个额外的部分覆盖组件是一个不充分的替代品的连续曲率与广泛的Fe线。窄的Fe K α发射线具有与宽线区域一致的速度宽度。低电离吸收体可能负责产生窄的Fe K α线,尽管视线之外的其他材料也可能有贡献。我们包括在我们的模型中的软带发射线从He-和H-类离子的N,O,Ne和Mg,符合光电离,虽然碰撞电离发射的一个小的贡献是可能的。

英文摘要:

We present results from a 150 ksec Suzaku observation of the Seyfert 1.5 NGC 3516 in October 2005. The source was in a relatively highly absorbed state. Our best-fit model is consistent with the presence of a low-ionization absorber which has a column density near 5 * 10^{22} cm^{-2} and covers most of the X-ray continuum source (covering fraction 96-100%). A high-ionization absorbing component, which yields a narrow absorption feature consistent with Fe K XXVI, is confirmed. A relativistically broadened Fe K alpha line is required in all fits, even after the complex absorption is taken into account; an additional partial-covering component is an inadequate substitute for the continuum curvature associated with the broad Fe line. A narrow Fe K alpha emission line has a velocity width consistent with the Broad Line Region. The low-ionization absorber may be responsible for producing the narrow Fe K 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.

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