Physics of the Central Engines of Active Galactic Nuclei

活动星系核中央引擎的物理学

• 批准号: 9120599
• 负责人: Mitchell Begelman
• 金额: $ 30万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-10-01 至 1997-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9120599&HistoricalAwards=false
• 关键词: Physics; Central; Engines; Active; Galactic

Diverse manifestations of violent activity in the nuclei of galaxies are believed to result from the interactions of matter with a supermassive black hole. However, the details of these interactions and their observational signatures are not well understood. This award will support theoretical research studying three important classes of phenomena in active galactic nuclei (AGNs): the formation of relativistic jets, the production of X-ray spectra, and interactions involving ultrarelativistic particles. The investigations described in this proposal will address the questions: Why do some AGNs produce powerful jets while others do not? What can X-ray observations tell us about the temperatures, densities, and spatial organization of matter close to the black hole? What roles (if any) do ultrarelativistic particles play in shaping the energy output of an AGN, and how does this energy affect the environment of the AGN? The long-term goals of this research are: 1) to determine whether the interactions of matter with a supermassive black hole really are responsible for AGN phenomena; 2) to understand in detail how these interactions take place: and 3) to learn what effects nuclear activity can have on the appearance and evolution of the host galaxy.

核团中剧烈活动的各种表现 星系被认为是物质相互作用的结果 一个超大质量黑洞。 然而，这些细节 相互作用和它们的观测信号并不好 明白 该奖项将支持理论研究学习 活动星系核中的三类重要现象 （活动星系核）：相对论性喷流的形成， X射线光谱和涉及超相对论的相互作用 粒子 本提案中所述的调查将 回答这些问题： 为什么有些活动星系核能产生强大的喷流而有些不能？ X射线观测能告诉我们什么关于温度， 密度和空间组织的物质接近黑色 洞？ 超相对论性粒子在塑造 活动星系核的能量输出，以及这种能量如何影响 活动星系核的环境？ 本研究的长期目标是：1）确定是否 物质与超大质量黑洞的相互作用 负责AGN现象; 2）详细了解如何 这些相互作用发生：3）了解核武器对人类的影响， 活动对宿主的外观和进化的影响 银河