arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1808.01043astro-ph.GA
收藏

活动星系核中的超快外流及其与吸积和喷射过程的联系

Ultra fast outflows, and their connection to accretion and ejection processes in AGNs

Anna Lia Longinotti

摘要:

越来越多的证据表明,在强大而明亮的活动星系核中,能量守恒的外流支持了这样一种观点,即从吸积盘发射的高速风在经历了与周围介质的冲击后系统地演化,并且它们能够排出足够的质量和能量,从而产生反馈。本次演讲将给出一个概述的活动星系核超快外流的最新结果,重点是光栅的亮源的X射线光谱。我将回顾UFO是如何工作的,它们的观测特性和它们与活动星系核在其他波段的流出的关系,它们对宿主星系的影响以及它们在反馈过程中的作用。

英文摘要:

The growing evidence for energy-conserving outflows in powerful and luminous AGN supports the idea that high-velocity winds launched from the accretion disc evolve systematically after undergoing a shock with the ambient medium and that they are capable to expel enough mass and energy so as to produce feedback. This talk will give an overview of recent results on AGN ultra fast outflows, with focus on grating X-ray spectra of bright sources. I will review how UFO work, their observational properties and their relation with AGN outflows in other bands, what is their impact on the host galaxies and their role in feedback processes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑