论文标题
微氧计时代I I：Fe XXIV共振螺旋钻对Fe XXV K $α$ Spectra的影响
X-ray spectroscopy in the microcalorimeter era I: Effects of Fe XXIV Resonance Auger Destruction on Fe XXV K$α$ spectra
论文作者
论文摘要
我们讨论了Fe $^{23+} $在确定光学厚云中Fe XXV K $α$复合物的线强度时的重要性，并研究LieDahl（2005）对共振钻机销毁（RAD）的预测。尽管最初是由珀尔修斯集群动机的，但我们的计算扩展到了天文学中遇到的各种色谱柱密度。 Fe XXV线光子由于“线互锁”而被三电子铁吸收后会改变/失去其身份。这可能会导致吸收离子的自由度，最终破坏了Rad的Fe XXV K $α$ photon。在Fe XXV K $α$复合物中的四个成员中，X线光子的很大一部分被Fe $^{23+} $吸收并被破坏，从而导致X线强度降低。例如，在10 $^{25} $ cm $^{ - 2} $的氢柱密度下，$ \ sim $ 32 \％x光子由于rad而被破坏，而w几乎不受影响。 y的线强度略有（$ \ leq $ 2 \％）降低。 Z不直接受到RAD的影响，但是Z和X线强度之间的对比行为指向X光子的微小分数（$ \ sim $ 2 \％）可能转换为Z光子。还讨论了由于电子散射逃逸（ESE）降低快速热电子引起的线强度的变化。
We discuss the importance of Fe$^{23+}$ in determining the line intensities of the Fe XXV K$α$ complex in an optically thick cloud, and investigate the prediction of Liedahl (2005) on Resonance Auger Destruction (RAD) with CLOUDY. Although initially motivated by the Perseus cluster, our calculations are extended to the wide range of column densities encountered in astronomy. A Fe XXV line photon can change/lose its identity upon absorption by three-electron iron as a result of "line interlocking". This may lead to the autoionization of the absorbing ion, ultimately destroying the Fe XXV K$α$ photon by RAD. Out of the four members in the Fe XXV K$α$ complex, a significant fraction of the x line photons is absorbed by Fe$^{23+}$ and destroyed, causing the x line intensity to decrease. For example, at a hydrogen column density of 10$^{25}$ cm$^{-2}$, $\sim$ 32\% of x photons are destroyed due to RAD while w is mostly unaffected. The line intensity of y is slightly ($\leq$2\%) reduced. z is not directly affected by RAD, but the contrasting behavior between z and x line intensities points towards the possible conversion of a tiny fraction ($\sim$ 2\%) of x photons into z photons. The change in line intensities due to Electron Scattering Escape (ESE) off fast thermal electrons is also discussed.
