Numerical Simulations and Observations of Radio Galaxies

射电星系的数值模拟和观测

• 批准号: 9012353
• 负责人: Jack Burns
• 金额: $ 19.6万
• 依托单位: New Mexico State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-15 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9012353&HistoricalAwards=false
• 关键词: Numerical; Simulations; Observations; Radio; Galaxies

This is a continuation of a research program involving numerical simulations and observations of extragalactic radio sources. The theme of this research is to study the interaction between ex- tended radio plasma the surrounding medium. Numerically, the capabilities of the MHD code ZEUS will be significantly extended to operate in three dimensions. This code will be used to study the propagation of radio jets in both two and three dimensions in a variety of galaxy and cluster atmospheres. In particular, a hydrodynamical mechanism for the confinement of hypersonic jets will be studied. The disruption of jets in cooling flow clusters will also be analyzed, as well as the bending and disruption of radio jets associated with tailed radio sources. Observational- ly, new VLA images of the middle and inner lobe regions of Cen- taurus A at 8 and 0.3 GHz and of the peculiar classical double 0816+526 will be made. Survey work will include an investigation of the properties of cD galaxies in rich clusters, observations of selected x-ray clusters and rich southern clusters, and high dynamic range mapping of a sample of luminous 3CR radio galaxies.

这是涉及河外射电源数值模拟和观测的研究计划的延续。 本研究的主题是研究扩展无线电等离子体与周围介质之间的相互作用。 从数字上看，MHD 代码 ZEUS 的功能将显着扩展，可在三个维度上运行。 该代码将用于研究射电射流在各种星系和星团大气中的二维和三维传播。 特别是，将研究限制高超音速射流的流体动力学机制。 还将分析冷却流簇中射流的破坏，以及与尾部无线电源相关的无线电射流的弯曲和破坏。 观测上，将制作半人马座 A 在 8 和 0.3 GHz 的中叶和内叶区域以及奇特的经典双星 0816+526 的新 VLA 图像。 调查工作将包括对丰富星团中的 cD 星系特性的调查、对选定的 X 射线星团和丰富的南方星团的观测以及发光 3CR 射电星系样本的高动态范围测绘。