Extragalactic Radio Source Studies

麻省理工学院(MIT)的河外射电天文学项目将重点研究引力透镜、发展甚长基线干涉测量(VLBI)和研究河外射电源的结构。主要的观测任务是完成麻省理工学院的调查，包括制作4000张自行校准的射电地图，这是工作的核心。这些物质构成了引力透镜搜索的基础，该搜索是与普林斯顿大学和加州理工学院的同事共同开展的。对VLA快照进行了检查和分类，并对最可能的引力透镜进行了分类。由此产生的例子将被用来研究星系和整个宇宙中物质的分布。我们将跟踪透镜复合体的时间变化，就像第一个成功监测的例子一样，将共同努力确定哈勃常数的值，如果值不一致，则理解这种变化的宇宙学含义。这项调查还将提供原材料，以便搜索红移非常高的射电星系和类星体。

The extragalactic radio astronomy program at Massachusetts Institute of Technology (MIT) will emphasize the study of gravitational lenses, the development of Very-Long-Baseline Interferometry (VLBI) and the study of the structure of extragalactic radio sources. The principal observational task is to complete the MIT survey, including the production of the 4000 self-calibrated radio maps that constitute the core of the work. That material forms the basis of gravitational lens search, carried out jointly with colleagues at Princeton and California Institute of Technology. The VLA snapshots are examined and classified, and the most likely gravitational lensing. The resulting examples will then be used to study the distribution of matter in galaxies and in the universe as a whole. The temporal variations of lensed complexes will be followed, and as in the first successfully monitored example, there will be a concerted effort to determine the value of the Hubble constant, and if the value is discordant, to understand the cosmological implications of such variations. The survey will also provide raw material to allow the search for radio galaxies and quasars of very high redshift.