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Light deflection in the post-linear gravitational field of bounded point-like masses

机译:有界点状质量的后线性引力场中的光偏转

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摘要

Light deflection in the post-linear gravitational field of two bounded point-like masses is treated. Both the light source and the observer are assumed to be located at infinity in an asymptotically flat space. The equations of light propagation are explicitly integrated to the second order in $G/c^2$ including a power expansion in the ratio of the relative separation distance to the impact parameter. It is shown that the expression obtained in this paper for the angle of light deflection is fully equivalent to the expression obtained by Kopeikin and Sch\"afer up to the order given there. The deflection angle takes a particularly simple form for a light ray originally propagating orthogonal to the orbital plane of a binary with equal masses. Application of the formulae for the deflection angle to the double pulsar PSR J0737-3039 for an impact parameter five times greater than the relative separation distance of the binary's components shows that the corrections to the Epstein-Shapiro light deflection angle of about $10^{-6}$ arcsec lie between $10^{-7}$ and $10^{-8}$ arcsec.
机译:处理了两个有界点状质量的线性后引力场中的光偏转。假定光源和观察者都位于渐近平坦空间中的无穷远处。光传播方程以$ G / c ^ 2 $明确地积分到二阶,包括相对分离距离与冲击参数之比的功率扩展。结果表明,本文所获得的关于光偏转角的表达式完全等同于Kopeikin和Sch \”在给出给定阶数之后所获得的表达式。偏转角最初对于光线采取了一种特别简单的形式在与质量相等的双星轨道平面正交的方向上传播。对于双脉冲星PSR J0737-3039,其偏转角的公式应用于比双星组件相对分离距离大五倍的冲击参数,表明对Epstein-Shapiro的光偏转角约为$ 10 ^ {-6} $ arcsec,位于$ 10 ^ {-7} $和$ 10 ^ {-8} $ arcsec之间。

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  • 作者

    Br"ugmann, M H;

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  • 年度 2005
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  • 原文格式 PDF
  • 正文语种 eng
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