Research in Gravitation Theory and Astrophysics

万有引力理论和天体物理学研究

• 批准号: 9019753
• 负责人: Lee Lindblom
• 金额: $ 13.64万
• 依托单位: Montana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-02-01 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9019753&HistoricalAwards=false
• 关键词: Research; Gravitation; Theory; Astrophysics

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.

本研究主要关注 研究天体物理学的情况， 引力场扮演了一个有趣的角色。 的 快速旋转中子星的振荡和稳定性 将被调查。 这里主要感兴趣的是 长期不稳定性是由耗散 粘性和重力辐射反应的影响。 此外，当局亦会调查下列问题： 阐述了耗散流体的相对论理论 的 因果关系的整体理论和结构， 平衡态的稳定性是基本的 兴趣 试图完全理解 广义相对论中平衡恒星模型的对称性 理论将继续（例如，“都是静止的恒星 球形？"). 最后，讨论了超流性对 旋转中子星的振荡和稳定性， 评估。 复杂的动力学的影响， 超流混合物的宏观振荡， 粘性效应对这些振荡的阻尼是 特别的兴趣。