Dynamics of Gravitationaly Compact, Extended and Deformed Bodies Moving in Strong Gravitational Fields

强引力场中运动的引力致密体、延伸体和变形体的动力学

• 批准号: 9511651
• 负责人: Kenneth Nordtvedt
• 金额: $ 5.94万
• 依托单位: Northwest Analysis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-01-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9511651&HistoricalAwards=false
• 关键词: Dynamics; Gravitationaly; Compact; Extended; Deformed

Derivation of the explicit analytic equation of motion for deformable celestial bodies, falling at relativistic speeds in strong gravitational fields, is the goal of this work. Dr. Nordtvedt's work builds on his fully covariant, strong field action principle for the motion of bodies with spherical extensiol, said action principle having been conjectured and made plausible by exact calculations of 1/c2 order motion of such extended bodies. This action principle for extended bodies also reveals the route for including consideration of body deformation on the relativistic motion. Any progress which can be made to more accurately describe the motion of realistic bodies falling in strong gravitational fields will aid in the a-priori calculation of gravitational radiation wave form pulses from the type of astrophysical events which have a likelihood of being observed by gravity wave detectors being constructed through National Science Foundation support. The sensitivity at which detection of the weakest gravity wave signals will be made depends on the precision to which the signal shape theoretical templates can be made.

这项工作的目标是推导在强引力场中以相对论速度下落的可变形天体的显式运动解析方程。 Nordtvedt 博士的工作建立在他关于球形可伸物体运动的完全协变、强场作用原理的基础上，所述作用原理是通过对此类可伸物体的 1/c2 阶运动的精确计算而推测并变得合理的。 这种扩展物体的作用原理也揭示了在相对论运动中考虑物体变形的途径。 在更准确地描述落在强引力场中的现实物体的运动方面所取得的任何进展，都将有助于对天体物理事件类型的引力辐射波形式脉冲进行先验计算，这些天体物理事件有可能被通过国家科学基金会支持建造的重力波探测器观测到。 对最弱重力波信号进行检测的灵敏度取决于信号形状理论模板的制作精度。