Gravitational Waves and the Physics of Strong Gravitational Fields

引力波和强引力场物理学

• 批准号: 9970821
• 负责人: Patrick Brady
• 金额: $ 15.65万
• 依托单位: University of Wisconsin-Milwaukee
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 2002-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9970821&HistoricalAwards=false
• 关键词: Gravitational; Waves; Physics; Strong; Fields

Research will be conducted to develop, to implement and to test data-analysis algorithms to search for gravitational-wave signals in data from the Laser Interferometer Gravitational-wave Observatory (LIGO). The effort will focus on: (i) the development of search and discrimination techniques in computationally expensive searches for sources of continuous gravitational waves, (ii) the exploration of analysis techniques which utilize data from multiple detectors, (iii) the development of techniques to detect gravitational wave signals from unmodelled burst sources, and (iv) the extraction of astrophysical information from the data. The ultimate goal of LIGO is the routine observation of gravitational waves from astrophysical sources; it is extremely important to develop robust techniques and algorithms to extract (from the data stream) the wealth of information that is carried by the gravitational wave signals. Theoretical tools will be developed to study the physics of strong gravitational fields. The effort will focus on the development of approximate methods to study gravitational-wave generation by inspiralling binary neutron stars and/or black holes in regimes which are not amenable to current techniques. Accurate theoretical models are needed to optimally utilize the data from the gravitational waves detectors. Efforts to understand the dynamics of gravitational collapse and black-hole formation will also continue; Brady's group will use numerical methods to study the dynamical collapse of perfect fluids and singularities inside spinning black holes.

将进行研究，以开发、实施和测试数据分析算法，从激光干涉仪引力波观测站的数据中寻找引力波信号。 这项工作将侧重于：（i）在计算费用昂贵的连续引力波源搜索中开发搜索和鉴别技术，（ii）探索利用来自多个探测器的数据的分析技术，（iii）开发从未建模的爆发源检测引力波信号的技术，以及（iv）从数据中提取天体物理信息。 LIGO的最终目标是对来自天体物理源的引力波进行常规观测;开发强大的技术和算法来（从数据流中）提取引力波信号所携带的丰富信息是非常重要的。将开发理论工具来研究强引力场的物理学。 这项工作的重点将是发展近似方法，以研究在目前技术不适用的情况下吸入双星中子星和/或黑洞产生引力波的情况。 需要精确的理论模型来最佳地利用引力波探测器的数据。 理解引力坍缩和黑洞形成的动力学的努力也将继续;布雷迪的小组将使用数值方法研究旋转黑洞内部完美流体和奇点的动力学坍缩。