论文标题
射电星系和类星体中的喷气机：观察性的观点
Jets in radio galaxies and quasars: an observational perspective
论文作者
论文摘要
本文简要介绍了我们从观察的角度回顾了我们当前对射电星系和类星体喷气机的理解，重点是对无线电波长的观察。总结了FARAROFF-RILEY分类方案的最新结果，以及FR类别以及高激发和低兴奋的射电星系中无线电结构和喷气机的性质。已经讨论了从核-PC到数百个KPC量表的射流和繁殖的直接和传播。喷气机表现出与块状星际介质相互作用的证据，尤其是在年轻的无线电源中，并且可以触发恒星形成，并根据物理条件抑制恒星形成。已经提出了这种相互作用和喷气反馈的观察证据，这些证据对我们对星系进化的理解产生了深远的影响。已经讨论了在广泛的投影线性尺寸和时间尺度上看到的复发性喷射活动。这篇评论文章以简要讨论有关喷气机的未解决问题的简要讨论，新望远镜应有助于解决这些问题。
This article gives a brief historical introduction and reviews our current understanding of jets in radio galaxies and quasars from an observational perspective, with an emphasis on observations at radio wavelengths. Recent results on the Fanaroff-Riley classification scheme, and the nature of radio structures and jets in the FR classes as well as in high-excitation and low-excitation radio galaxies are summarized. The collimation and propagation of jets from nuclear sub-pc to hundreds of kpc scales from both observatinoal and theoretical work have been discussed. The jets exhibit evidence of interaction with a clumpy interstellar medium, especially in young radio sources, and could trigger both star formation as well as suppress star formation depending on the physical conditions. Observational evidence for such interactions and jet feedback which have profound implications in our understanding of galaxy evolution have been presented. Recurrent jet activity which has been seen over a wide range of projected linear size and time scales has been discussed. This review article concludes with a brief discussion of unresolved questions on jets which new telescopes should help address.
