BLR在2.5-D FRADO中的图片：动力学和几何学
The picture of BLR in 2.5-D FRADO: Dynamics & Geometry
摘要：
活动星系中宽线区（BLR）的动力学是一个悬而未决的问题，直接的观测约束表明主要是开普勒运动，可能有流入或流出的痕迹。本文详细研究了Czerny & Hryniewicz（2011）基于吸积盘（AD）表面尘埃辐射压的BLR模型.在这里，我们认为一个非流体动力学的方法来从整个AD辐射的影响下的尘埃云的动力学。我们在这里使用的尘埃不透明度的现实描述，我们介绍了两个简单的几何模型的本地屏蔽的尘埃云。结果表明，作用在尘埃云上的辐射压足够强，可以导致从AD表面的动力外流，因此BLR具有外流的动力学特征（大部分是失败的）。动力学强烈地依赖于源的爱丁顿比。大爱丁顿比源显示出复杂的速度场和大的垂直速度相对于AD表面，而对于较低的爱丁顿比源的垂直速度是小的，大部分的排放起源接近AD表面。因此，云动力学决定了BLR的三维几何形状。
英文摘要：
The dynamics of the Broad Line Region (BLR) in Active galaxies is an open question, direct observational constraints suggest a predominantly Keplerian motion, with possible traces of inflow or outflow. In this paper we study in detail the physically motivated BLR model of (Czerny & Hryniewicz, 2011) based on the radiation pressure acting on dust at the surface layers of accretion disk (AD). We consider here a non-hydrodynamical approach to the dynamics of the dusty cloud under the influence of radiation coming from the entire AD. We use here the realistic description of the dust opacity, and we introduce two simple geometrical models of the local shielding of the dusty cloud. We show that the radiation pressure acting on dusty clouds is strong enough to lead to dynamical outflow from the AD surface, so the BLR has a dynamical character of (mostly failed) outflow. The dynamics strongly depend on the Eddington ratio of the source. Large Eddington ratio sources show a complex velocity field and large vertical velocities with respect to the AD surface, while for lower Eddington ratio sources vertical velocities are small and most of the emission originates close to the AD surface. Cloud dynamics thus determines the 3-D geometry of the BLR.
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