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.

该项目的目的是研究黑洞系统的基本流体动力学和磁流失动力学。 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建模的。 将使用三维的一般相对论代码来研究压力支持的积聚托里中非轴对称磁盘不稳定性的非线性行为。 这项研究将扩展到对三维积聚流的研究，通过非轴对称流体动力波通过磁盘通过磁盘运输，以及由于kerr孔拖动的框架而产生的影响。 黑洞吸积系统还以高度准确的喷气机的形式产生流出。 将使用二维牛顿代码研究磁流失动力的射流准直过程。 喷射系统SS433和SC0 X-1将使用此代码进行建模，以确定磁力是否可以解释观察到的射流聚焦。 此外，工作将继续进行全面的计算机程序，该程序将应用于涉及喷气准则，聚焦和生成以及从旋转黑洞中提取能量的日益复杂的问题。