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首页> 外文期刊>High energy density physics >Probing AGN unification with radiation hydrodynamics simulations of dusty obscuring winds
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Probing AGN unification with radiation hydrodynamics simulations of dusty obscuring winds

机译：用尘埃遮挡风的辐射流体动力学模拟探测AGN统一

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摘要

Observational properties of active galactic nucleus are essentially influenced by their winds. The illumination of a parsec-scale, geometrically thin, dusty accretion disk by X-rays, and UV radiation leads to the conversion of such radiation into IR. In result the disk becomes geometrically thick due to pressure of the IR radiation on dust, and eventually develops a rigorous IR-driven accretion disk wind. Here we present the results from the radiation hydrodynamics simulations that take into account the conversion of X-rays into IR with the latter calculated in a flux-limited diffusion approximation. We show that when AGN luminosity, exceeds 0.1L_(edd), the outflowing dusty wind provides the obscuration with IR pressure on dust playing a major role. The outer dense and cold part of the flow provides obscuration while the inner hot, and photoionized has properties similar to those of a warm absorber flow. At luminosities ≤0.1L_(edd) episodes of the outflow are followed by extended periods when the wind switches to slow accretion.
机译：活跃的银河核的观测特性基本上受其风的影响。用X射线和紫外线辐射照亮一个等距刻度，几何形状薄的，积尘的吸积盘，并导致这种辐射转换为IR。结果，由于红外线辐射在灰尘上的压力，圆盘在几何形状上变厚，并最终形成了严格的红外线驱动吸积盘风。在这里，我们介绍了辐射流体动力学模拟的结果，其中考虑了X射线到IR的转换，后者以通量受限的扩散近似值计算。我们表明，当AGN的光度超过0.1L_（edd）时，流出的尘埃风会在红外线对尘埃的压力作用下起主要作用。气流的外部稠密和冷部分提供了遮盖力，而内部热的和光电离的部分具有类似于暖吸收器流的特性。在光度≤0.1L_（edd）时，流出的情况会随着风切换到缓慢的积聚而延长。

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