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首页> 外文期刊>The Astrophysical journal >The origin of emission and absorption features in Ton S180 Chandra observations
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The origin of emission and absorption features in Ton S180 Chandra observations

机译：Ton S180 Chandra观测值的发射和吸收特征的起源

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摘要

We present a new interpretation of the Ton S180 spectrum obtained by the Chandra Spectrometer ( Low Energy Transmission Grating). Several narrow absorption lines and a few emission disk lines have been successfully fitted to the data. We have not found any significant edges accompanying line emission. We propose an interpretation of narrow lines consistent with that of the recent paper by Krolik, in which a warm absorber is strongly inhomogeneous. Such a situation is possible in the so-called multiphase medium, where regions with different ionization states, densities, and temperatures may coexist in thermal equilibrium under constant pressure. We illustrate this scenario with theoretical spectra of radiation transferred through a stratified cloud with constant pressure ( instead of constant density) computed by the TITAN code in plane-parallel approximation. Detected spectral features are faint, and their presence does not alter the broadband continuum. We model the broadband continuum of Ton S180 assuming an irradiated accretion disk with a dissipative warm skin. The set of parameters appropriate for the data cannot be determined uniquely, but models with low values of the black hole mass have too hot and radially extended a warm skin to explain the formation of soft X-ray disk lines seen in the data. [References: 40]
机译：我们介绍了由钱德拉光谱仪（低能量透射光栅）获得的Ton S180光谱的新解释。几条狭窄的吸收线和几条发射盘线已成功地拟合到数据中。我们没有发现伴随线发射的任何明显边缘。我们建议对窄线的解释与Krolik最近发表的论文一致，在该论文中，吸热剂非常不均匀。这种情况在所谓的多相介质中是可能的，其中在恒定压力下，具有不同电离状态，密度和温度的区域可以在热平衡中共存。我们用由TITAN代码以平面平行近似法计算的恒定压力（而不是恒定密度）通过层状云传输的辐射的理论光谱来说明这种情况。检测到的光谱特征微弱，并且它们的存在不会改变宽带连续体。我们假设Ton S180的宽带连续体是在辐射的吸积盘下散发着温暖的皮肤。不能唯一确定适合数据的参数集，但是黑洞质量值较低的模型温度太高，并且径向扩展了温暖的蒙皮，无法解释数据中看到的软X射线盘线的形成。 [参考：40]

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