Research in Gravitation Theory and Astrophysics

这项研究主要关注于强引力场发挥有趣作用的天体物理情况的调查。将研究快速旋转中子星的振荡和稳定性。这里主要关心的是由粘度和引力辐射反应的耗散效应缓和的长期不稳定性。还将研究如何建立耗散流体的相对论理论。整个理论的因果关系以及平衡状态的结构和稳定性都具有根本的意义。全面理解广义相对论中平衡恒星模型的对称性的尝试将继续（例如，“所有静态恒星都是球形的吗？”）。最后，讨论了超流体对旋转中子星振荡和稳定性的影响。电荷超流体混合物的复杂动力学对宏观振荡的影响以及粘滞效应对这些振荡的阻尼是我们特别感兴趣的。

This research is primarily concerned with the investigation of astrophysical situations in which strong gravitational fields play an interesting role. The oscillations and stability of rapidly rotating neutron stars will be investigated. Of primary interest here are the secular instabilities that are moderated by the dissipative effects of viscosity and gravitational-radiation reaction. Investigations will also be made into the problem of formulating a relativistic theory of dissipative fluids. The causality of the overall theory and the structure and stability of the equilibrium states are of fundamental interest. The attempts to understand completely the symmetries of equilibrium stellar models in general relativity theory will continue (e.g., "Are all static stars spherical?"). Finally, the effects of superfluidity on the oscillations and stability of rotating neutron stars will be evaluated. The influence of the complicated dynamics of a charge superfluid mixture on the macroscopic oscillations and the damping of these oscillation by viscous effects are of particular interest.