首页> 外文期刊>The Astrophysical journal >ADVECTION-DOMINATED INFLOWOUTFLOWS FROM EVAPORATING ACCRETION DISKS
【24h】

ADVECTION-DOMINATED INFLOWOUTFLOWS FROM EVAPORATING ACCRETION DISKS

机译:蒸发积垢盘产生的受警告支配的流入

获取原文
获取原文并翻译 | 示例
           

摘要

In this Letter we investigate the properties of advection-dominated accretion flows (ADAFs) fed by the evap- oration of a Shakura-Sunyaev accretion disk (SSD). In our picture, the ADAF fills the central cavity evacuated by the SSD and extends beyond the transition radius into a coronal region. We find that, because of global angular momentum conservation, a significant fraction of the hot gas flows away from the black hole, forming a transsonic wind, unless the injection rate depends only weakly on radius . The Bernoulli number of the inflowing gas is negative if the transition radius is ≤ l00 Schwarzschild radii, so matter falling into the hole is gravitationally bound. The ratio of inflowing to outflowing mass is ≈1/2, so in these solutions the accretion rate is of the same order as in standard ADAFs and much larger than in advection-dominated inflow/outflow models. The possible relevance of evaporation-fed solutions to accretion flows in black hole X-ray binaries is briefly discussed. -
机译:在这封信中,我们研究了由Shakura-Sunyaev吸积盘(SSD)的蒸发提供的以平流为主的吸积流(ADAF)的性质。在我们的图片中,ADAF填充了由SSD疏散的中央空腔,并超出了过渡半径,进入了冠状区域。我们发现,由于整体角动量守恒,除非注入速率仅微弱地依赖于半径,否则很大比例的热气体会从黑洞流出,形成跨音速风。如果过渡半径≤100 Schwarzschild半径,则流入气体的伯努利数为负,因此,落入孔中的物质受到重力约束。流入与流出质量之比约为1/2,因此在这些解决方案中,吸积率与标准ADAF中的吸积率相同,并且比以对流为主的流入/流出模型大得多。简要讨论了蒸发补给的溶液与黑洞X射线双星中的增生流的可能相关性。 --

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号