引力标量-张量理论第二后牛顿近似下的光偏转
Light deflection in the second post-Newtonian approximation of scalar-tensor theory of gravity
摘要:
本文利用包含中程引力的标量-张量理论中第二次后牛顿近似的度规系数和运动方程,导出了光的偏转,并与前人的工作进行了比较。这些结果将是有用的精密天体测量任务,如GAIA(全球天体物理干涉仪),SIMS(空间干涉测量任务)和LATOR(激光天体测量相对论测试),旨在天体测量的微弧秒和纳弧秒精度,需要第二后牛顿框架和星历来确定恒星和航天器的位置。
英文摘要:
In this paper, we use the metric coefficients and the equation of motion in the 2nd post-Newtonian approximation in scalar-tensor theory including intermediate range gravity to derive the deflection of light and compare it with previous works. These results will be useful for precision astrometry missions like GAIA (Global Astrometric Interferometer of Astrophysics), SIMS (The Space Interferometry Mission) and LATOR (Laser Astrometric Test Of Relativity) which aim at astrometry with microarcsecond and nanoarcsecond accuracies and need 2nd post-Newtonian framework and ephemeris to determine the stellar and spacecraft positions.
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