A Numerical Approach to Black Hole Physics

黑洞物理的数值方法

• 批准号: 9018251
• 负责人: John Hawley
• 金额: $ 14.54万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-02-01 至 1995-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9018251&HistoricalAwards=false
• 关键词: Numerical; Approach; Black; Hole; Physics

The aim of this project is to investigate the basic hydrodynamics and magnetohydrodynamics of black hole systems. The research approach is numerical; the black hole physics is modeled using large-scale, multidimensional finite- differencing. A three-dimensional, general relativistic code will be used to investigate the nonlinear behavior of nonaxisymmetric disk instabilities in pressure-supported accretion tori. This research will be extended to studies of three-dimensional accretion flows, to the transport of angular momentum through disks by nonaxisymmetric hydrodynamic waves, and to effects due to frame dragging by Kerr holes. Black hole accretion systems also produce outflows in the form of highly collimated jets. Magnetohydrodynamic jet collimation processes will be studied with a two-dimensional Newtonian code. The jet systems SS433 and Sc0 X-1 will be modeled with this code to determine whether magnetic forces can account for the observed jet focusing. In addition, work will continue on a fully-relativistic computer program, which will be applied to increasingly complex problems involving jet collimation, focusing, and generation, as well as to the extraction of energy from rotating black holes.

该项目的目的是调查基本的 黑洞系统的流体力学和磁流体力学。 研究方法是数值的;黑洞物理学是 使用大规模的多维有限- 差异 一个三维的，广义相对论的代码 将被用来调查的非线性行为， 非轴对称圆盘不稳定性 增积环面 这项研究将扩展到研究 三维吸积流，以角的运输 通过非轴对称流体动力波的圆盘的动量， 以及由于克尔空穴的帧拖曳的影响。 黑色 空穴吸积系统也会以 高度准直的射流。 磁流体动力射流准直 过程将研究与二维牛顿 代码. SS 433和Sc 0 X-1喷气系统将采用 这个代码可以确定磁力是否可以解释 所观察到的射流聚焦。 此外，还将继续开展工作， 一个完全相对论性的计算机程序， 对于涉及射流准直的日益复杂的问题， 聚焦和生成，以及提取 旋转黑洞的能量。