报告题目:Weak Gravitational Lensing Effects and Full-sky Ray-tracing Simulation

报  告  人:Dr. Guoliang Li (Purple Mountain Observatory)

报告时间:Thursday, June 06, 2019, 02:00pm

报告地点:蒙民伟科技南楼S727

报告摘要:According to General Relativity theory, light rays can be deflected when they propagate in our universe. The tidal gravitational files lead to differential deflection of light bundles and therefore change the shape 、flux and size of the distance objects. These are so-called gravitational lensing effects. In this talk, I will focus on the weak lensing effects which caused by the large-scale structures, introduce some basic theories and cosmological applications of weak lensing, our ray-tracing simulation results and the comparison with observations.