arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1702.00461astro-ph.HEastro-ph.GA
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Seyfert 1,Mrk 1040的高分辨率X射线光谱。与钱德拉一起揭示失败的核风

High Resolution X-ray Spectroscopy of the Seyfert 1, Mrk 1040. Revealing the Failed Nuclear Wind with Chandra

James Reeves, Valentina Braito, Ehud Behar, Travis Fischer, Steve Kraemer, Andrew Lobban, Emanuele Nardini, Delphine Porquet, Jane Turner

摘要:

本文报道了邻近的X射线明亮的Seyfert 1星系Mrk 1040中暖吸收体的高分辨X射线能谱。这些观测是在2013-2014年的时间框架内使用Chandra高能透射光栅进行的,总曝光量为200 ks。大量的吸收线从Ne,Mg和Si的检测从各种各样的电离状态。特别是,从Ne,Mg和Si的内K-壳层吸收线的检测,从F-样到Li-样离子的电荷状态,表明存在大量的低电离吸收气体,由陡峭的软X射线连续体照射。观测结果表明至少有3个热吸收组分,电离参数在$\logξ= 0-2$范围内,柱密度为$N_{\rm H} =1.5-4.0 \times 10^{21}$ cm $^{-2}$。速度剖面表明,吸收气体的流出速度很低,在Mrk 1040系统速度的$\pm100$ km s $^{-1}$范围内,这表明任何流出的气体都可能在足够大的尺度上停滞在这个活动星系核中。温暖的吸收体很可能位于远离黑洞的地方,在原子核的300 pc范围内,并且在空间上与HST图像中看到的扩展窄线区域的发射相一致。铁K带光谱仅显示窄的发射线,6.4 keV处的Fe K $α$与康普顿厚pc级后处理气体的反射一致。

英文摘要:

High resolution X-ray spectroscopy of the warm absorber in the nearby X-ray bright Seyfert 1 galaxy, Mrk 1040 is presented. The observations were carried out in the 2013-2014 timeframe using the Chandra High Energy Transmission Grating with a total exposure of 200 ks. A multitude of absorption lines from Ne, Mg and Si are detected from a wide variety of ionization states. In particular, the detection of inner K-shell absorption lines from Ne, Mg and Si, from charge states ranging from F-like to Li-like ions, suggests the presence of a substantial amount of low ionization absorbing gas, illuminated by a steep soft X-ray continuum. The observations reveal at least 3 warm absorbing components ranging in ionization parameter from $\logξ= 0-2$ and with column densities of $N_{\rm H} =1.5-4.0 \times 10^{21}$cm$^{-2}$. The velocity profiles imply that the outflow velocities of the absorbing gas are low and within $\pm100$ km s$^{-1}$ of the systemic velocity of Mrk 1040, which suggests any outflowing gas may have stalled in this AGN on large enough scales. The warm absorber is likely located far from the black hole, within 300 pc of the nucleus and is spatially coincident with emission from an extended Narrow Line Region as seen in the HST images. The iron K band spectrum reveals only narrow emission lines, with Fe K$α$ at 6.4 keV consistent with originating from reflection off Compton thick pc-scale reprocessing gas.

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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