论文标题
在数十个parsecs的规模上加速了类星体快速流出的证据
Evidence for quasar fast outflows being accelerated at the scale of tens of parsecs
论文作者
论文摘要
类星体流出可能在调节宿主星系中起着至关重要的作用，尽管类星体流出的空间尺度仍然是一个主要的谜，其加速机制知之甚少。流出的运动信息是了解其起源和加速机制的关键。在这里，我们报告了样品和单个类星体的不同流出组件的半乳酸中心距离。我们发现，流出距离随速度的增加而增加，典型的价值从几个parsecs到100多个parsec，提供了直接证据证明以10 parsecs的规模进行加速。这些流出含量约为总排出能量的约1％，而它们的运动学与尘埃驱动的模型一致，其发射半径与灰尘圆环的规模相当，这表明灰尘辐射和类星体辐射之间的耦合可能会产生与星系进化至关重要的强大反馈。
Quasar outflows may play a crucial role in regulating the host galaxy, although the spatial scale of quasar outflows remain a major enigma, with their acceleration mechanism poorly understood. The kinematic information of outflow is the key to understanding its origin and acceleration mechanism. Here, we report the galactocentric distances of different outflow components for both a sample and an individual quasar. We find that the outflow distance increases with velocity, with a typical value from several parsecs to more than one hundred parsecs, providing direct evidence for an acceleration happening at a scale of the order of 10 parsecs. These outflows carry ~1% of the total quasar energy, while their kinematics are consistent with a dust driven model with a launching radius comparable to the scale of a dusty torus, indicating that the coupling between dust and quasar radiation may produce powerful feedback that is crucial to galaxy evolution.
