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-0507455 KrolikThis research will carry three closely related projects using fully general relativistic three-dimensional magneto-hydrodynamic simulations of acceptance to black holes.这项研究将利用对黑洞吸积的完全广义相对论三维磁流体动力学模拟进行三个密切相关的项目。 第一个涉及研究那些特别归因于广义相对论的性质，例如标架拖曳和巴丁-彼得森效应。 第二个考虑辐射的作用，特别是辐射压力，可能的剧烈破坏性的不稳定性，任何变化的吸积率取决于当地条件，和散热的分布。 最后，这些结果将更紧密地与可观测数据联系在一起，对铁谱线轮廓、银河系中心的辐射、光变曲线中的准周期特征以及伽马射线爆发的中心引擎进行预测。黑洞强烈地吸引了公众的注意力，因此PI不时地向学校或其他非专业观众发表演讲。 来自研究模拟的数据也用于一个单独的NSF资助的项目，其目的是创建计算机辅助三维可视化的新工具。