论文标题
活性银核的广泛区域中的秋季云中的非热发射
Non-thermal emission from fall-back clouds in the Broad-Line Region of Active Galactic Nuclei
论文作者
论文摘要
活性银河核的光谱表现出大概起源于宽线区域（BLR）的宽发射线，并在中央黑孔周围主要开普勒运动中有气体do云的云。经常看到流入和流动运动的签名。 BLR的动态特征与已将辐射加速的尘土流出的场景一致（Frado; Czerny＆Hryniewicz 2011）。在此方案中，预测BLR云的频繁高速影响落在基础吸积盘上。冲击速度主要取决于黑孔质量，积聚率和金属性，范围从几km s $^{ - 1} $到数千km s $^{ - 1} $。由于碰撞而形成的强震动会导致相对论颗粒和相关的辐射特征的产生。在这项工作中，研究了此过程中产生的非热辐射，并提出了不同参数集的光谱能量分布。我们发现，由云的影响引起的非热过程可能会导致X射线和伽马射线带的发射，从而发挥云密度和金属性是关键作用。
The spectra of active galactic nuclei exhibit broad-emission lines that presumably originate in the Broad-Line Region (BLR) with gaseous-dusty clouds in a predominantly Keplerian motion around the central black hole. Signatures of both inflow and outflow motion are frequently seen. The dynamical character of BLR is consistent with the scenario that has been branded as the Failed Radiatively Accelerated Dusty Outflow (FRADO; Czerny & Hryniewicz 2011). In this scheme, frequent high-velocity impacts of BLR clouds falling back onto the underlying accretion disk are predicted. The impact velocities depend mainly on the black-hole mass, accretion rate, and metallicity and they range from a few km s$^{-1}$ up to thousands of km s$^{-1}$. Formation of strong shocks due to the collisions can give rise to the production of relativistic particles and associated radiation signatures. In this work, the non-thermal radiation generated in this process is investigated, and the spectral energy distributions for different parameter sets are presented. We find that the non-thermal processes caused by the impacts of clouds can lead to emission in the X-ray and the gamma-ray bands, playing the cloud density and metallicity a key role.
