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arXiv 0901.1882astro-ph.HE
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Seyfert 1星系Mrk 509中Fe K复合体的XMM-牛顿和Suzaku分析

XMM-Newton and Suzaku analysis of the Fe K complex in the Seyfert 1 galaxy Mrk 509

G. Ponti, M. Cappi, C. Vignali, G. Miniutti, F. Tombesi, M. Dadina, A. C. Fabian, P. Grandi, J. Kaastra, P. O. Petrucci, S. Bianchi, G. Matt, L. Maraschi, G. Malaguti

摘要:

我们报告部分重叠的XMM-牛顿(~260 ks)和朱雀(~100 ks)的铁K带附近,明亮的塞弗特1星系Mrk 509的观测。源显示了解决中性铁K线,最有可能产生的吸积盘的外部。此外,该源还显示出由于电离物质而导致的6.4 keV线的进一步发射。这种发射很好地再现了在吸积盘中产生的宽线,而它不能很容易地描述从静止的光电离气体的散射或发射。所有XMM-牛顿观测的总和光谱显示存在由高度电离的流出物质产生的7.3千电子伏的窄吸收线。XMM-牛顿数据的光谱变异性研究表明,在6.6-6.7千电子伏的变异性过剩。这些变化可能产生于宽电离线的红翼,也可能是由于另一个吸收结构的变化。朱雀的数据表明,中性Fe K α线强度在长时间尺度(几年)上是恒定的,它们也证实了最有可能用宽电离Fe线来解释过量蓝移发射。平均朱雀光谱不同于XMM-牛顿的一个消失的7.3 keV的吸收线和6.7 keV左右,其中XMM-牛顿数据单独建议的变化。

英文摘要:

We report on partially overlapping XMM-Newton (~260 ks) and Suzaku (~100 ks) observations of the iron K band in the nearby, bright Seyfert 1 galaxy Mrk 509. The source shows a resolved neutral Fe K line, most probably produced in the outer part of the accretion disc. Moreover, the source shows further emission blue-ward of the 6.4 keV line due to ionized material. This emission is well reproduced by a broad line produced in the accretion disc, while it cannot be easily described by scattering or emission from photo-ionized gas at rest. The summed spectrum of all XMM-Newton observations shows the presence of a narrow absorption line at 7.3 keV produced by highly ionized outflowing material. A spectral variability study of the XMM-Newton data shows an indication for an excess of variability at 6.6-6.7 keV. These variations may be produced in the red wing of the broad ionized line or by variation of a further absorption structure. The Suzaku data indicate that the neutral Fe Kalpha line intensity is consistent with being constant on long timescales (of a few years) and they also confirm as most likely the interpretation of the excess blueshifted emission in terms of a broad ionized Fe line. The average Suzaku spectrum differs from the XMM-Newton one for the disappearance of the 7.3 keV absorption line and around 6.7 keV, where the XMM-Newton data alone suggested variability.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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