活动星系核旋进吸积盘辐射入流的三维模拟：出流的形成
Three-Dimensional Simulations of Inflows Irradiated by a Precessing Accretion Disk in Active Galactic Nuclei: Formation of Outflows
摘要：
本文对由旋进吸积盘驱动的活动星系核附近的气体流动进行了三维流体动力学模拟。我们考虑的影响，从这样的磁盘上的环境辐射力在一个相对较大的规模（高达~10 pc。我们隐含地包括旋进磁盘强迫磁盘辐射场进动周围的对称轴与一个给定的周期（$P$）和倾斜角（$Θ$）。我们研究的时间演化的磁盘照射的流动，并调查的基本依赖性的流动形态，质量通量，角动量的不同组合的$Θ$和$P$。我们发现气体流进入一个有两个组成部分的结构，（1）赤道流入和（2）双极流入/流出，流出沿着两极（圆盘法线的方向）离开系统。然而，流动并不总是达到稳定状态。我们发现随着$Θ$的增加，外边界处的最大出流速度和动能出流功率可以显著减小。我们还发现，通过内边界的质量流入率不随$Θ$的增加而显著变化。（略）
英文摘要：
We present three-dimensional (3-D) hydrodynamical simulations of gas flows in the vicinity of an active galactic nucleus (AGN) powered by a precessing accretion disk. We consider the effects of the radiation force from such a disk on its environment on a relatively large scale (up to ~10 pc. We implicitly include the precessing disk by forcing the disk radiation field to precess around a symmetry axis with a given period ($P$) and a tilt angle ($Θ$). We study time evolution of the flows irradiated by the disk, and investigate basic dependencies of the flow morphology, mass flux, angular momentum on different combinations of $Θ$ and $P$. We find the gas flow settles into a configuration with two components, (1) an equatorial inflow and (2) a bipolar inflow/outflow with the outflow leaving the system along the poles (the directions of disk normals). However, the flow does not always reach a steady state. We find that the maximum outflow velocity and the kinetic outflow power at the outer boundary can be reduced significantly with increasing $Θ$. We also find that of the mass inflow rate across the inner boundary does not change significantly with increasing $Θ$. (Abbreviated)
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