Gravitation Physics and Relativistic Astrophysics

引力物理学和相对论天体物理学

• 批准号: 1404105
• 负责人: Eanna Flanagan
• 金额: $ 44.5万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-07-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1404105&HistoricalAwards=false
• 关键词: Gravitation; Physics; Relativistic; Astrophysics

This award funds theoretical research in several different topics in relativistic astrophysics and general relativity, with a focus on tests of general relativity and on sources of gravitational radiation that might be detected by the Laser Interferometer Gravitational Wave Observatory (LIGO) and by future space based detectors. Theoretical studies of sources of gravitational waves funded by this award will be useful to aid detection of signals from black holes and other sources, and also to aid in their interpretation. Gravitational wave studies can tell us about the nature of gravity, properties of black holes, and properties of the early Universe.In more detail, this principal research topics of this award are: (i) The development of methods to compute the gravitational waveforms from point particles inspiralling into spinning black holes, using a combination of analytical and numerical approaches; (ii) The computation of the effects of radiation reaction on the gravitational wave signals from cosmic strings, which may have been produced in the early Universe; and (iii) The exploration of an explanation of angular momentum ambiguity in general relativity in terms of the gravitational wave memory effect, using approximation methods that have been developed for asymptotically flat spacetimes.

该奖项资助相对论天体物理学和广义相对论的几个不同主题的理论研究，重点是广义相对论的测试和可能被激光干涉引力波天文台（LIGO）和未来的空间探测器探测到的引力辐射源。 由该奖项资助的引力波源的理论研究将有助于检测来自黑洞和其他来源的信号，并有助于解释它们。 引力波研究可以告诉我们引力的本质、黑洞的性质和早期宇宙的性质。更详细地说，该奖项的主要研究课题是：（i）发展方法，计算点粒子螺旋进入旋转黑洞的引力波形，使用分析和数值方法相结合;计算辐射反应对宇宙弦引力波信号的影响，这些信号可能是在早期宇宙中产生的;（iii）从引力波记忆效应的角度探讨广义相对论中角动量模糊性的解释，使用已经为渐近平坦时空开发的近似方法。