活动星系核中X射线光电离介质的热不稳定性：II。热传导在吸热器中的作用
Thermal instability in X-ray photoionized media in Active Galactic Nuclei: II. Role of the thermal conduction in warm absorber
摘要：
在恒定压力下的光电离气体可以显示热不稳定性，对于可能的热平衡具有三个或更多个解。只有当考虑电子传导时，才能得到辐照介质结构的唯一解。我们的研究的主题是估计热传导的影响如何影响的结构和透射光谱的温吸收体计算的辐射转移与代码TITAN。我们开发了一种新的计算模式的代码TITAN获得几个解决方案，对于一个给定的外部条件，我们测试后验的解决方案是最接近所需的积分条件的基础上传导。我们表明，自动模式的代码TITAN提供的解决方案的辐射转移，这是一般一致的估计精确的解决方案在百分之几的精度，与较大的误差为一些线强度（高达20%）的铁线在中间电离状态。
英文摘要：
A photoionized gas under constant pressure can display a thermal instability, with three or more solutions for possible thermal equilibrium. A unique solution of the structure of the irradiated medium is obtained only if electron conduction is considered. The subject of our study is to estimate how the effect of thermal conduction affects the structure and transmitted spectrum of the warm absorber computed by solving radiative transfer with the code TITAN. We developed a new computational mode for the code TITAN to obtain several solutions for a given external conditions and we test a posteriori which solution is the closest one to the required integral condition based on conduction. We demonstrate that the automatic mode of the code TITAN provides the solution to the radiative transfer which is generally consistent with the estimated exact solution within a few per cent accuracy, with larger errors for some line intensities (up to 20 per cent) for iron lines at intermediate ionization state.
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