Developement of a wide field gravitational lensing ray-tracing numerical simulation technique for next generation surveys

在本研究计画中，我发展了一种宽场重力透镜射线追踪数值模拟技术。我们引入了球面薄壳透镜平面近似，使我们能够执行一个完整的天空光线跟踪。成功地实现了本项目的主要目的。我编写了一个全天空光线跟踪模拟的计算机程序，在该程序中实现了新技术。利用筑波大学和日本国家天文台的开放式超级计算机设施，我们进行了一系列宇宙学N体模拟。然后利用N体模拟得到的宇宙物质分布，进行了全天引力透镜射线追迹模拟。我生成了两组全天引力透镜模拟数据。

In this research project, I have developed a wide field gravitational lensing ray-tracing numerical simulation technique. We introduced a spherical thin shell lens plane approximation, which enable us to perform a full sky ray-tracing. Thus the primary purpose of this project was achieved successfully. I made a computer program of the full sky ray-tracing simulation in which the new technique was implemented. Using open-use super-computer facilities at Tsukuba University and National Astronomical Observatory Japan, we performed a series of cosmological N-body simulations. And then using the matter distribution in the universe generated by the N-body simulations, we performed the full-sky gravitational lensing ray-tracing simulations. I generated two sets of full-sky gravitational lensing simulation data.