RUI: Testing Einsteinian-Newtonian Theories In Strong Gravitational Fields and At Galactic Distances

RUI：在强引力场和银河距离中测试爱因斯坦-牛顿理论

• 批准号: 9507476
• 负责人: Ernesto Esteban
• 金额: $ 3.64万
• 依托单位: University of Puerto Rico at Humacao
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-01 至 1998-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9507476&HistoricalAwards=false
• 关键词: RUI; Testing; Einsteinian; Newtonian; Theories

Two topics will be investigated in this research project. First, to gain a physical insight of Einstein's general relativity (in strong gravitational fields) Professor Esteban will study the bending of light, periastron shift, and time delays near millisecond pulsars and rotating black holes. To this purpose an alternative procedure to the standard methods found in the literature will be developed. Neither spacetime curvature nor relativistic rotational effects will be neglected. Secondly, he will investigate the physical implications of Weyl gravity's linear term in the gravitational potentials of self-gravitating ellipsoids and disks. This is important because in astrophysics, ellipsoids often have been considered as models of galactic bars. To confront Weyl gravity with observations and experiments he will study light bending and time delays by using an exact exterior solution for a static, spherically symmetric gravitating source in locally conformal invariant Weyl gravity. This solution is the analog of the exterior Schwarzschild vacuum solution of Einstein's general relativity. One important aim of this project is to involve physics and mathematics students in undergraduate research experiences. This project will provide talented students with the opportunity for planning, carrying out, and reporting scientific research. By using advanced computational tools, they will develop computing skills needed for their future advancement in science or engineering.

本研究项目将研究两个主题。 首先，为了获得爱因斯坦广义相对论（在强引力场中）的物理见解，埃斯特班教授将研究光的弯曲、近星体位移以及毫秒脉冲星和旋转黑洞附近的时间延迟。 为此，将开发文献中标准方法的替代程序。 时空曲率和相对论旋转效应都不会被忽略。 其次，他将研究外尔引力线性项在自引力椭球体和圆盘引力势中的物理含义。 这很重要，因为在天体物理学中，椭球体通常被视为银河棒的模型。 为了通过观察和实验来对抗外尔引力，他将通过在局部共形不变外尔引力中使用静态、球对称引力源的精确外部解来研究光弯曲和时间延迟。 该解类似于爱因斯坦广义相对论的外部史瓦西真空解。 该项目的一个重要目标是让物理和数学学生参与本科生研究经历。 该项目将为有才华的学生提供规划、开展和报告科学研究的机会。 通过使用先进的计算工具，他们将培养未来科学或工程进步所需的计算技能。