论文标题
NLSY1 1E 0754.6+392.8的宽带X射线视图
A broadband X-ray view of the NLSy1 1E 0754.6+392.8
论文作者
论文摘要
许多活性银河核（AGN）的软X射线带受到跨越我们的视线的部分电离物质的影响。在这种情况下，XMM-Newton的两个过去观察结果（相距6个月）和同时进行的Nustar-Swift（$ \ sim $ 8年后）暴露了狭窄的线seyfert 1 Galaxy 1E 0754.6+392.8揭示了Fe K $α$α$α$α$α$α$α$α$α$α$α$α$α$的强烈和可变wa和其他吸收剂的强烈和变化。我们介绍了该AGN讨论其宽带（0.3-79 KEV）频谱和时间特性的第一个X射线表征。我们对2006年4月和2006年10月进行的两个$ \ sim $ 10 ks（净暴露）XMM-Newton快照进行了时间和光谱分析。我们还研究了1E 1E 0754.6+392.8使用同时Swift-Swift Swift频谱对其宽带光谱进行建模的高能量行为。现象学和身体动机的模型均经过测试。我们发现通量变异性（分别为0.3-2和2-10 KEV频段）的通量变异性（$ \ sim $ 150％和30％）和几个月时间尺度的光谱变化（$Δγ\ sim $ 0.4）。检测到远离中央超级黑洞的相对较冷的材料而产生的与恒定数年相一致的反射分量。塑造1E 0754.6+392.8光谱的主要光谱特征是温暖的吸收剂。多年来，这种组件是持续存在的，其电离和色谱柱密度的可变性在几个月内观察到3 $ \ times10^{22} \ rm cm cm^{ - 2} \ lysSim $ n $ n $ _ {\ rm {\ rm {\ rm { $ \ sillesim \ log（ξ/{\ rm erg〜s^{ - 1} 〜cm}）\ sillesim $ 2.1。尽管暴露了短暂的暴露，但我们可能会发现吸收过程中有两个其他高度电离和高速流出成分的证据。强制性的较长暴露是为了表征此AGN中的复杂流出。
The soft X-ray band of many active galactic nuclei (AGNs) is affected by obscuration due to partially ionised matter crossing our line of sight. In this context, two past XMM-Newton observations (6 months apart) and a simultaneous NuSTAR-Swift ($\sim$8 years later) exposure of the Narrow Line Seyfert 1 galaxy 1E 0754.6+392.8 revealed an intense and variable WA and hints of additional absorbers in the Fe K$α$ band. We present the first X-ray characterisation of this AGN discussing its broadband (0.3-79 keV) spectrum and temporal properties. We conduct a temporal and spectroscopic analysis on two $\sim$10 ks (net exposure) XMM-Newton snapshots performed in April and October 2006. We also study the high energy behaviour of 1E 0754.6+392.8 modelling its broadband spectrum using simultaneous Swift-NuSTAR data. Both phenomenological and physically motivated models are tested. We find the presence of flux variability ($\sim$150% and 30% for 0.3-2 and 2-10 keV bands, respectively) and spectral changes at months timescales ($ΔΓ\sim$0.4). A reflection component that is consistent with being constant over years and arising from relatively cold material far from the central super massive black hole is detected. The main spectral feature shaping the 1E 0754.6+392.8 spectrum is a warm absorber. Such a component is persistent over the years and variability of its ionisation and column density is observed down on months in the ranges 3$\times10^{22} \rm cm^{-2}\lesssim$ N$_{\rm{H}}\lesssim7.2\times10^{22} \rm cm^{-2}$ and 1.5 $\lesssim\log(ξ/{\rm erg~s^{-1}~cm})\lesssim$2.1. Despite the short exposures, we find possible evidence of two additional highly ionised and high-velocity outflow components in absorption. Longer exposures are mandatory in order to characterise the complex outflow in this AGN.
