标题： 从黑洞中提取能量 显示英文标题

标题： Energy Extraction from Black Holes

摘要： 在本讲座中，我将介绍通过电磁Blandford-Znajek过程从黑洞中提取旋转能量以及产生相对论喷流的情况。 在介绍一些关于黑洞磁层电动力学的基础内容之后，我们利用在视界上正则的Kerr-Schild坐标推导出Blandford和Znajek最重要的结果。 在最后部分，我们简要描述了关于旋转黑洞吸积流的最新数值模拟结果，产生的大尺度外流，以及形成具有高洛伦兹因子的准直相对论喷流的情况。 显示英文摘要

摘要： In this lecture I give an introduction to the rotational energy extraction of black holes by the electromagnetic Blandford-Znajek process and the generation of relativistic jets. After some basic material on the electrodynamics of black hole magnetospheres, we derive the most important results of Blandford and Znajek by making use of Kerr-Schild coordinates, which are regular on the horizon. In a final part we briefly describe results of recent numerical simulations of accretion flows on rotating black holes, the resulting large-scale outflows, and the formation of collimated relativistic jets with high Lorentz factors.