论文标题
与雅典娜的Agn离子流出流的光谱
Spectral-timing of AGN ionized outflows with Athena
论文作者
论文摘要
事实证明，光谱定时技术在研究可变活性银河核（AGN）中的X射线电晕和积聚盘之间的相互作用方面具有价值。在某些条件下，来自中央AGN区域的光离子流出也在核成分的可观察到的光谱定时性能中起作用。可变电离通量会导致中间气体电离或重组，从而导致时间依赖性吸收光谱。了解这些流出的频谱定时特性对于确定它们在AGN环境中的作用至关重要，也是对其他AGN组件的时序特征的正确解释。在本文中，我们测试了Athena X-IFU仪器在研究黑洞系统的光谱和光谱中的功能，显示可变流出。我们将窄线Seyfert 1 IRA 13224-3809作为测试用例。我们的发现表明，尽管吸收培养基的非线性响应可能会导致时间滞后的复杂行为，但所致的相干性降低可用于约束气体密度和与中心源的距离。最终，对AGN流出的相干光谱进行建模可能构成研究流出气体的物理特性的宝贵工具。
Spectral-timing techniques have proven valuable in studying the interplay between the X-ray corona and the accretion disc in variable active galactic nuclei (AGN). Under certain conditions, photo-ionized outflows emerging from central AGN regions also play a role in the observable spectral-timing properties of the nuclear components. The variable ionizing flux causes the intervening gas to ionize or recombine, resulting in a time-dependent absorption spectrum. Understanding the spectral-timing properties of these outflows is critical for the determination of their role in the AGN environment, but also the correct interpretation of timing signatures of other AGN components. In this paper, we test the capabilities of the Athena X-IFU instrument in studying the spectral and spectral-timing properties of a black hole system displaying a variable outflow. We take the narrow-line Seyfert 1 IRAS 13224-3809 as a test case. Our findings show that while the non-linear response of the absorbing medium can result in complex behaviour of time lags, the resulting decrease in the coherence can be used to constrain gas density and distance to the central source. Ultimately, modelling the coherence spectra of AGN outflows may constitute a valuable tool in studying the physical properties of the outflowing gas.
