论文标题

辐射阻力对线力驱动的风的影响

Effect of radiation drag on the line-force-driven winds

论文作者

Wang, Bei-Chuan, Yang, Xiao-Hong, Bu, De-Fu, Huang, Shu-Su

论文摘要

使用无线电和 - 大片主动银河核(AGNS)的X射线光谱测量具有轻度相对论速度的超快速流出(UFO)。通常,据信,不明飞行物是由黑洞周围(BH)周围的积聚磁盘产生的。建议线索驾驶模型是从积聚磁盘中驱动不明飞行物的机制。在本文中,我们使用非流动力学方法来检查辐射拖拉效应对增生盘产生的线驱动风的影响。我们发现辐射拖拉效应可以显着削弱线力驱动的风。与没有辐射拖流效应的情况相比,当考虑辐射拖拉效应时,风的最大速度被$ \ sim $ 60 \%-70 \%降低,质量流率降低了$ \ sim $ 50 \%\%-80 \%,而动力降低了,大约降低了动力。辐射拖拉效应狭窄的范围是产生风的区域。

Ultra-fast outflows (UFOs) with mildly relativistic velocities are measured using the X-ray spectra of radio-quiet and -loud active galactic nuclei (AGNs). In general, UFOs are believed to be generated from the accretion disk around a black hole (BH). A line-force driving model is suggested to be the mechanism to drive UFOs from the accretion disk. In this paper, we use the non-hydrodynamic approach to examine the influences of radiation-drag effects on the line-force-driven winds generated from the accretion disk. We find that the radiation-drag effects can significantly weaken the line-force-driven winds. Compared with the case without the radiation-drag effects, when the radiation-drag effects are considered, the maximum speed of winds is reduced by $\sim$60\%--70\%, the mass outflow rate is reduced by $\sim$50\%--80\%, and the kinetic power is reduced by about an order of magnitude. The radiation-drag effects narrow the area where the winds are generated.

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