摘要
自从人们获得河外射电源的第一个结构图像以来，30多年时间已经过去了。在这段时间的后半期，人们对许多源中的喷流状结构作了大量研究。目前，我们正在分析所获得的有关喷流的第一代结果，这包括高分辨率观测、效植模拟和理论研究等诸方面的成就。在本文中将详细地讨论河外射电源中的喷流。整个题目由两部分组成：第一部分将阐述一些基本概念，即喷流的定义、形式、产生和传播等方面；喷流的不对称性及其统一的解释模式也将在这一部分内讨论。有关喷流的形态和用VLA、MERLIN、VLBI和毫米波／亚毫米波VLBI观测所得到的高分辨率结果，将放在第二部分内阐述。
More than three decades have passed since our present picture of extragalactic radio sources began to unfold. The latter half of that time has witnessed the 'mapping' or 'imaging' of jet-like structures in many of these sources. We are now digesting the first generation of high resolution observations of extragalactic jets, the first generation of numerical simulations, and the first generation of theoretical studies. This paper will address the subject of extragalactic jets in a detailed and comprehensive manner. The topic consists of two parts. Part I will give us a basic concept. We will discuss the definition, trpes, production and propagation of jets. Also jet asymmetries and unified models will be included in this part. Peatures related to jets and high resolution imaging including the VLA, MERLIN, VLBI and mm/submm-VLBI will bediscussed in part II.
出处
《天文学进展》
CSCD
北大核心
1996年第3期227-242,共16页
Progress In Astronomy
基金
国家自然科学基金
关键词
活动星系
类星体
喷流
星系
galaxies
active-galaxies
jets-guasars
general-techniques
interferometric-radio continuum
galaxies
