Compact Object Binaries and Gravitational Radiation

致密天体双星和引力辐射

• 批准号: 0855423
• 负责人: Pablo Laguna
• 金额: $ 41万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855423&HistoricalAwards=false
• 关键词: Compact; Object; Binaries; Gravitational; Radiation

The Compact Object Binaries and Gravitational Radiation project focuses on computational modeling of astrophysical phenomena that enter the LIGO sensitivity band, thus exploiting the predictive power of numerical relativity. The effort capitalizes on both the latest advances of LIGO and its partners in gathering data and operating at design sensitivity and on the recent revolution in numerical relativity that has made binary black hole simulations possible. The project consists of the following areas: (i) Enhancement of computational infrastructure to improve performance and accuracy of black hole collision simulations and their associated gravitational waves, (ii) binary black hole simulations with unequal mass and spinning black holes in support of LIGO observational efforts, and (iii) black hole and neutron star simulations to model central engines for short gamma-ray bursts.The project transforms the focus of the numerical relativity at Georgia Tech from development to applications, with the aim of producing results that capture broad interest and involving scientific computing that pushes the frontiers of high performing computing. Specifically, the project further enhances the computational infrastructure and enables the development of flexible and reusable community tools essential to collaborative effort in support of the detection and interpretation of gravitational wave observations.  In addition, the project provides valuable sources of ideas and materials for interdisciplinary training of undergraduate and graduate students in gravitational wave physics.

紧凑天体双星和引力辐射项目的重点是进入LIGO敏感带的天体物理现象的计算建模，从而利用数值相对论的预测能力。这项工作利用了LIGO及其合作伙伴在收集数据和以设计灵敏度运行方面的最新进展，以及最近使二元黑洞模拟成为可能的数值相对论革命。该项目包括以下领域：（i）加强计算基础设施，以提高黑洞碰撞模拟及其相关引力波的性能和准确性，（ii）模拟质量不等的双黑洞和旋转黑洞，以支持LIGO观测工作，以及（iii）黑洞和中子星星模拟，以模拟短伽马的中心发动机，射线暴。该项目将格鲁吉亚理工学院的数值相对论的重点从开发转向应用，其目的是产生引起广泛兴趣的结果，并涉及推动高性能计算前沿的科学计算。具体而言，该项目进一步增强了计算基础设施，并使开发灵活和可重复使用的社区工具成为可能，这对于支持引力波观测的探测和解释的合作努力至关重要。此外，该项目还为引力波物理学本科生和研究生的跨学科培训提供了宝贵的思想和材料来源。