Gravitation Physics and Relativistic Astrophysics

该奖项资助相对论天体物理学和广义相对论中几个不同主题的理论研究，重点是广义相对论的测试，以及激光干涉仪引力波天文台(LIGO)和未来的空间探测器可能探测到的引力辐射源。由该奖项资助的引力波来源的理论研究将有助于探测来自黑洞和其他来源的信号，并有助于对它们的解释。引力波研究可以告诉我们引力的性质，黑洞的性质，以及早期宇宙的性质。更详细地说，这个奖项的主要研究课题是：(I)利用解析和数值相结合的方法，计算激发到旋转黑洞的点粒子的引力波形；(Ii)计算辐射反应对宇宙弦引力波信号的影响，这可能是在早期宇宙中产生的；以及(Iii)利用已发展的渐近平坦时空的近似方法，探索用引力波记忆效应解释广义相对论中的角动量模糊性。

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.