We present a method for modeling gravitational lensing as gradient-index lenses in the ray-tracing software CODE V. When applied to gravitational lensing by the Sun, these models yield results in agreement with theoretical and experimental results. The extension of this type of model to “lumpy” astronomical objects whose lensing behavior is difficult to predict with traditional methods is discussed.

中文翻译：

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使用梯度指数模型的引力透镜射线追踪模拟

我们提出了一种在光线跟踪软件CODE V中将引力透镜建模为渐变折射率透镜的方法。当太阳将引力透镜应用于引力透镜时，这些模型得出的结果与理论和实验结果一致。讨论了将这种类型的模型扩展到“块状”天文物体的过程，这些天体的镜头行为很难用传统方法预测。