Collaborative Research: Modeling Advanced LIGO Gravitational Wave Sources and Their Electromagnetic Counterparts

合作研究：模拟先进的 LIGO 引力波源及其电磁对应物

• 批准号: 1205732
• 负责人: Christian Ott
• 金额: $ 24.86万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-15 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1205732&HistoricalAwards=false
• 关键词: Collaborative; Research; Modeling; Advanced; LIGO

This award will support a multifaceted theoretical study of the mergers of various types of compact objects such as neutron stars. Understanding the full sequence of events in these mergers is a great interdisciplinary challenge of high current interest. The work will model binary formation and gravitational wave-driven inspiral; the hydrodynamics of mergers; the viscous, thermal and nuclear evolution of the post merger remnant; the general relativistic radiation hydrodynamics of the collapse to neutron stars and black holes (with its associated gravitational wave signals); and the nuclear and radiation hydrodynamics of the unbound ejecta that produces observable electromagnetic (light, radio wave, etc.) signals. A major motivation is to model both gravity wave and electromagnetic signatures from these mergers. The two types of signatures provide important information about different regions of the sources. Gravitational waves will determine the 'engine' of the sources, their masses, spins, and inclinations. The electromagnetic signals will provide the precise locations, compositions, and their relation to the rest of astrophysics (nucleosynthesis, pulsars, magnetars, transients, Type Ia supernovae, formation rates and progenitors). The project will contribute to the training of graduate students and in regular student exchanges between the participating institutions. Members of the research team will continue their efforts to give non-technical lectures for the public, high schools and undergraduate institutions, and consult on curricula, films, TV and radio. The results of this research, on topics that tend to generate broad interest (stellar collisions, explosions, collapse to black holes, gravitational waves in space-time), will be incorporated into these activities. The team will also make the results from this study widely available to the astrophysics community.

该奖项将支持一项多方面的理论研究，该研究对各种紧凑型物体（例如中子恒星）的合并。了解这些合并中的事件的完整顺序是对高级利益的巨大跨学科挑战。 这项工作将建模二元形成和引力波动的灵感。合并的流体动力学；后合并残留物的粘性，热和核演变；塌陷到中子星和黑洞的一般相对论辐射动力学（及其相关的引力信号）；以及未结合的喷射的核和辐射流体动力学，产生可观察到的电磁（光，无线电波等）信号。 一个主要的动机是对这些合并的重力波和电磁特征进行建模。两种类型的签名提供了有关来源不同区域的重要信息。引力波将确定来源，质量，旋转和倾向的“发动机”。电磁信号将提供精确的位置，组成及其与其他天体物理学的关系（核合成，脉冲脉冲，磁铁，瞬态，IA型超新星，形成率和祖细胞）。该项目将有助于对研究生的培训以及参与机构之间的常规学生交流。研究小组的成员将继续努力为公众，高中和本科机构进行非技术讲座，并就课程，电影，电视和广播进行咨询。这项研究的结果是关于倾向于引起广泛兴趣的主题（出色的碰撞，爆炸，倒塌到黑洞，时空的重力波）的结果。该团队还将为天体物理学社区广泛提供这项研究的结果。