标题： BLR在2.5维FRADO中的图像：动力学与几何学 显示英文标题

标题： The picture of BLR in 2.5-D FRADO: Dynamics & Geometry

摘要： 活动星系核的宽线区（BLR）动力学是一个开放性问题，直接观测约束表明主要是一种开普勒运动，可能带有吸积或外流的痕迹。 本文详细研究了基于辐射压力作用于吸积盘（AD）表面尘埃层的 Czerny 和 Hryniewicz（2011）提出的物理上合理的 BLR 模型。 我们考虑了非流体力学方法来描述受来自整个吸积盘辐射影响的尘埃云的动力学。 我们使用了现实的尘埃吸收率描述，并引入了两种简单的局部屏蔽几何模型。 我们证明了作用于尘埃云上的辐射压力足够强，能够导致从吸积盘表面的动态外流，因此 BLR 具有（大多失败的）外流的动态特性。 动力学强烈依赖于源的爱丁顿比值。 高爱丁顿比值的源显示出复杂的速度场和相对于吸积盘表面的大垂直速度，而对于较低爱丁顿比值的源，垂直速度较小，大部分发射源自接近吸积盘表面的位置。 因此，云的动力学决定了 BLR 的三维几何结构。 显示英文摘要

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.