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.

这是一项涉及河外射电源的数值模拟和观测的研究计划的继续。本研究的主题是研究外加射电等离子体与周围介质的相互作用。在数值上，MHD代码Zeus的能力将显著扩展到三维操作。这个代码将被用来研究射电喷流在各种星系和星系团大气中的二维和三维传播。特别是，将研究限制高超声速喷流的流体力学机制。还将分析冷却流团中喷流的破坏，以及与尾射电源相关的射电喷流的弯曲和破坏。作为观测，我们将在8 GHz和0.3 GHz的Cen-Taurus A的中叶和内叶区，以及特殊的经典双星0816+526拍摄新的VLA图像。调查工作将包括调查富星系团中CD星系的性质，观测选定的X射线星系团和富南方星系团，以及绘制发光3CR射电星系样本的高动态射电范围图。