Collaborative Research: Simulation Neutron Star-Black Hole Inspirals. From Binaries to Accretion and Jets

合作研究：模拟中子星-黑洞螺旋。

• 批准号: 0653369
• 负责人: Luis Lehner
• 金额: $ 8万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0653369&HistoricalAwards=false
• 关键词: Collaborative; Research; Simulation; Neutron; Star

An accreting black hole binary system (ABHB) consists of a star orbiting a small black hole. One particularly interesting example is a neutron star-black hole (NS-BH) binary, which may be interesting sources of gravitational waves for gravitational wave observatories such as Advanced LIGO. The gravitational and electromagnetic wave signals from NS-BH binaries contains information about the particular evolution of the binary, including magnetic effects and the disruption of the neutron star by the tidal forces of the black hole.This award supports the development of computational infrastructure and techniques to study ABHBs and related systems. This includes the further development of HAD, a freely available, modular computational toolkit for solving differential equations in a distributed parallel environment. HAD provides sophisticated adaptive mesh refinement capabilities, which allow the user to combine different types of differential equations and/or numerical methods. Techniques for solving the Einstein equations and magnetohydrodynamics (MHD) equations will be further developed and implemented in the code to meet the demands of simulating ABHB systems and extracting valuable physical information.This work serves to advance numerical techniques for an important scientific problem, as well as the creation and dissemination of advanced tools for distributed computing. The modular design of the infrastructure allows other researchers to share and extend these tools. Finally, this study involves the training of postdoctoral researchers, graduate students, and undergraduates.

一个积聚的黑洞二进制系统（ABHB）由绕着小黑洞的星星组成。一个特别有趣的例子是一个中子星 - 黑洞（NS-BH）二进制，这可能是引力波观测值等引力波的有趣来源。来自NS-BH二进制文件的引力和电磁波信号包含有关二进制的特殊演变的信息，包括磁效应和黑洞的潮汐力破坏中子恒星。该奖项支持计算基础结构和研究ABHBS和相关系统的计算基础结构和技术的发展。这包括进一步开发的HAD，可免费获得的模块化计算工具包，用于在分布式并联环境中求解微分方程。已经提供了复杂的自适应网格改进功能，使用户可以组合不同类型的微分方程和/或数值方法。将在代码中进一步开发和实施，用于求解爱因斯坦方程式和磁性流失动力学（MHD）方程的技术，以满足模拟ABHB系统并提取有价值的物理信息的需求。这项工作将用于推进重要的科学问题的数值技术，以实现重要的科学问题，以及对先进工具的创建和分发分布式计算。基础架构的模块化设计使其他研究人员可以共享和扩展这些工具。最后，这项研究涉及对博士后研究人员，研究生和本科生的培训。