论文标题
超出尘土飞扬的超大气体在部分遮盖的类星体中
Ultradense Gases beyond Dusty Torus in a Partially Obscured Quasar
论文作者
论文摘要
黑洞和星系之间的共同进化表明，主动银河核的反馈通过向周围环境驱射辐射和动能来影响宿主星系。经常通过空间分辨的光谱法观察到本地宇宙中的较大规模流出，而较小的规模流出不能通过当前观测值直接解决。在灰尘圆环的尺度上，辐射和动能从中央活性核与材料相互作用。但是，由于缺乏明确的气体排放，很少报道对此类流出的观察结果。在这里，我们报告了从部分遮盖的类星体中尘土飞扬的游览规模来检测清晰且丰富的排放线的起源。线条共享一个常见的中间宽度，最大宽度为最大宽度约1900 \ kmps \，并在两个系统中显示：一个主要系统是未迁移的，一个次要系统的蓝换灯约为2600 \ kmps。线强度比结合了光电发模拟，表明密度高达$ \ sim $ 10^{13}〜\ rm cm cm^{ - 3} $的密度高至$ \ sim $ 10^{ - 3} $。我们将其解释为通过在灰尘圆环的高度和高温度的气体引起的冲击激发的线上，而不是由中央积聚磁盘摄影。我们推测，从积聚磁盘发射的流出碰撞到尘土飞扬的圆环的内壁上，并冲击气体导致主要排放线。流出的气体也可能碰撞到周围孤立的云层上，并产生蓝移度的次要排放线。
The co-evolution between black holes and galaxies suggests that feedback of active galactic nuclei influence host galaxies through ejecting radiative and kinetic energies to surroundings. Larger scale outflow in local universe are frequently observed by spatially resolved spectroscopy, while smaller scale outflow cannot be directly resolved by current observations. At the scale of the dusty torus, radiative and kinetic energies ejected from the central active nucleus interact with the materials. However, observations of such outflow are rarely reported due to the lack detection of unambiguously gas emission. Here we report the detection of clear and rich emission lines origin from the scale of dusty tours in an partially obscured quasar. The lines share a common intermediate width with full width at half maximum about 1900 \kmps\ and are shown in two systems: a major system is unshifted and a minor system has a blue-shifts of about 2600 \kmps. The line intensity ratios, combining photo-ionization simulations, indicates an ultradense line-emitting region with the density as high as $\sim$ $10^{13}~\rm cm^{-3}$. We interpret this as the lines being excited by a shock induced by the high-density and high-temperature gases at the scale of dusty torus, rather than photo-ionized by the central accretion disk. We speculate that the outflow, launched from the accretion disk, collides onto the inner wall of the dusty torus and shock-heat the gases to cause the major emission lines. The outflowing gases may also collide onto surrounding isolated clouds, and give rise to blue-shifted minor emission lines.
