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arXiv 2107.12403astro-ph.GAastro-ph.HE
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IC 5063中的活动星系核-宿主相互作用。I.大尺度X射线形态学和光谱分析

AGN-host interaction in IC 5063. I. Large-scale X-ray morphology and spectral analysis

A. Travascio, G. Fabbiano, A. Paggi, M. Elvis, W. P. Maksym, R. Morganti, T. Oosterloo, T. Fiore

摘要:

我们报告的深(270 ks)的X射线钱德拉数据的最响亮的无线电,塞弗特2星系在附近的宇宙(z=0.01135),IC 5063的分析。射电结构与银盘和电离双锥的排列,使我们能够研究射电喷流和核辐射对星际介质的影响。核和双锥光谱表明,低光电离阶段与更多的电离或热气体成分混合,而交叉锥光谱主要由冲击和碰撞电离气体排放。沿喷流尾迹的软(<3 keV)X射线发射的团簇状形态,以及在较软能量(<1.5 keV)下垂直于射电喷流的大(~2.4 kpc)结构,表明喷流-ISM相互作用对环核气体发射的贡献很大。硬X射线连续谱(>3 keV)和Fe K-α 6.4 keV辐射都沿双锥方向扩展到kpc大小,表明核光子与星系盘中致密云的相互作用,就像在其他康普顿厚(CT)活动核中观察到的那样。西北锥光谱也表现出Fe XXV发射线,这似乎是空间上扩展和空间相关的最强烈的无线电热点,建议喷ISM相互作用。

英文摘要:

We report the analysis of the deep (270 ks) X-ray Chandra data of one of the most radio-loud, Seyfert 2 galaxies in the nearby Universe (z=0.01135), IC 5063. The alignment of the radio structure with the galactic disk and ionized bi-cone, enables us to study the effects of both radio jet and nuclear irradiation on the interstellar medium (ISM). The nuclear and bi-cone spectra suggest a low photoionization phase mixed with a more ionized or thermal gas component, while the cross-cone spectrum is dominated by shocked and collisionally ionized gas emission. The clumpy morphology of the soft (<3 keV) X-ray emission along the jet trails, and the large (~2.4 kpc) filamentary structure perpendicular to the radio jets at softer energies (<1.5 keV), suggest a large contribution of the jet-ISM interaction to the circumnuclear gas emission. The hard X-ray continuum (>3 keV) and the Fe K-alpha 6.4 keV emission are both extended to kpc size along the bi-cone direction, suggesting an interaction of nuclear photons with dense clouds in the galaxy disk, as observed in other Compton Thick (CT) active nuclei. The north-west cone spectrum also exhibits an Fe XXV emission line, which appears spatially extended and spatially correlated with the most intense radio hot-spot, suggesting jet-ISM interaction.

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