RUI: Studies of Powerful Radio Sources

强大的射电源在我们理解星系演化和星系核心活动现象方面发挥着重要作用。定义、量化和理解这些射电源的性质和结构是很重要的。这将有助于更好地理解射电源的物理特性，以及射电源与(1)为大规模射电发射提供动力的活动星系核，(2)它们的宿主星系，以及(3)它们的气体和星系环境之间的关系。这项工作将涉及旨在提高和扩展我们对射电源的知识和理解的研究，以便量化、评估和理解它们的特性。强大的扩展射电源被观察到相对较高的红移，将使用的样本包括28个源，红移为2。研究将首先分析每个源在两个或多个无线电频率上的无线电桥接结构。结果将与使用各种输入参数运行的数值模拟的预测结果进行比较，并与为描述这些源的特性而提出的几种不同分析模型的预测结果进行比较。将有大量的本科生参与这项工作。在宾夕法尼亚州立大学伯克斯-利哈伊谷学院与本科生一起工作的经验表明，学生可以以各种方式做出贡献

AST-0206002Daly, Ruth A.Powerful radio sources play an important role in our understanding of galaxy evolution and the phenomenon of activity in the nuclei of galaxies. It is important to define, quantify, and understand the properties and structure of these radio sources. This will lead to a better understanding of the physics of the radio sources and the relationship of the radio sources to (1) the active galactic nuclei that power the large-scale radio emission, (2) their host galaxies, and (3) their gaseous and galactic environments. This work will involve studies that are aimed at improving and extending our knowledge and understanding of the radio sources in order to quantify, evaluate, and understand their properties. Powerful extended radio sources are observed to relatively high redshift, and the sample that will be used includes 28 sources out to redshifts of two. The studies will begin with an analysis of the radio bridge structure of each source at two or more radio frequencies. Results will be compared with predictions of numerical simulations run with a variety of input parameters, and with predictions from several different analytical models proposed to describe the properties of these sources. There will be substantial undergraduate student involvement in the work. Experience working with undergraduate students at the Berks-Lehigh Valley College of Penn State University indicates that students can contribute in a variety of ways.***