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arXiv 0807.3872gr-qcastro-ph
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引力透镜近似方程的比较及一个改进的新方程

A comparison of approximate gravitational lens equations and a proposal for an improved new one

V. Bozza

摘要:

以广义相对论对光弯曲的精确处理为参考,比较了常用近似透镜方程的精度。我们的结论是,最好的近似透镜方程是Ohanian透镜方程,我们提出了一个新的表达式在观察者,透镜和源平面之间的距离。我们还研究了一个现实的引力透镜的情况下,Ohanian透镜方程的精度可能需要一个可靠的治疗引力透镜和正确的提取有关引力物理的全部信息。

英文摘要:

Keeping the exact general relativistic treatment of light bending as a reference, we compare the accuracy of commonly used approximate lens equations. We conclude that the best approximate lens equation is the Ohanian lens equation, for which we present a new expression in terms of distances between observer, lens and source planes. We also examine a realistic gravitational lensing case, showing that the precision of the Ohanian lens equation might be required for a reliable treatment of gravitational lensing and a correct extraction of the full information about gravitational physics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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