天体物理学讲座第二讲 活动星系核物理

星系的活动是星系核心大质量黑洞吸积周围的气体释放巨大的辐射功率的过程，它是强引力场物理，高能物理和辐射流体物理的天然实验室，文章介绍了活动星系核中黑洞吸积，发射线形成和外流的观测事实和基本物理过程等，指出了现有理论存在的一些问题。

PHYSICS OF ACTIVE GALACTIC NUCLEI

Active galactic nuclei are among the most spectacular objects in the universe wi th huge energy output in a small volume. It is believed that the release of grav itational binding energy through accreting matter into supper massive black hol es is the basic force behind their activity. They are a natural laboratory for s trong gravitation, high energy physics and radiative fluid dynamics. We review s ome basic physical processes in the accretion disk, emission line region and out flows from nuclei.