Physics of Accretion Disks Around Black Holes

黑洞周围吸积盘的物理学

• 批准号: 0507455
• 负责人: Julian Krolik
• 金额: $ 67.29万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2010-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0507455&HistoricalAwards=false
• 关键词: Physics; Accretion; Disks; Around; Black

AST-0507455KrolikThis research will carry out three closely related projects using fully general relativistic three-dimensional magneto-hydrodynamic simulations of accretion onto black holes. The first involves studying those properties that are specifically due to general relativity, such as frame dragging and the Bardeen-Petterson effect. The second considers the role of radiation, and specifically radiation pressure, possible violently disruptive instabilities, any variation of the accretion rate dependent on local conditions, and the distribution of heat dissipation. Finally, those results will be tied more closely to observables, making predictions about iron line profiles, the radiation expected from the Galactic center, quasi-periodic features in light curves, and the central engine of gamma ray bursts.Black holes strongly catch the public's fancy, so that the PI from time to time gives talks to school or other lay audiences. Data from the research simulations are also used in a separate NSF-funded project whose aim is to create new tools for computer-assisted three-dimensional visualization.

AST-0507455KrolikThis Research将使用完全相对论的三维磁磁动力学模拟在黑洞上进行三个密切相关的项目。 首先涉及研究这些特性是由于一般相对论，例如框架拖动和Bardeen-Petterson效应。 第二个考虑了辐射的作用，特别是辐射压力的作用，可能会严重破坏性的不稳定性，取决于局部条件的积聚率的任何变化以及散热的分布。 最后，这些结果将更紧密地与可观察物联系在一起，对铁线轮廓进行预测，银河系中心预期的辐射，光曲线中的准周期特征以及伽玛射线爆发的中心发动机。Black孔强烈地捕捉到公众的幻想，因此PI的时间从时间上及时吸引了学校或其他上学的听众对话。 来自研究模拟的数据还用于单独的NSF资助项目，其目的是为计算机辅助的三维可视化创建新工具。