CAREER: Investigation of Cosmological Models with Weak Lensing

AST- 0132953Uros SeljakDr.普林斯顿大学的Seljak将开发一个全面的理论框架来分析，理解和连接弱引力透镜的许多方面及其对宇宙学的意义。 弱引力透镜现象发生时，物质沿着视线，这可能是不可观察的，放大和扭曲的图像背景星系。 Seljak博士将通过将他的理论预测与实际观察进行比较，在这一研究领域取得进展。他将利用几个观测调查，包括斯隆数字巡天和深透镜调查。他将利用这些数据对中微子的质量、新发现的暗能量的性质、星系团中暗物质的存在、暗物质对星系形成的影响以及暗物质成团与星系成团之间的关系提出限制。作为他教育使命的一部分，Seljak博士将以他的研究为例，在普林斯顿大学开发一门计算物理学本科课程。他还将把各个层次的本科生融入他的研究小组。Seljak博士还将参加当地的一个外展计划，通过该计划，他将与当地教师合作，并参加定期的班级访问。

AST- 0132953Uros SeljakDr. Seljak of Princeton University will develop a comprehensive theoretical framework to analyze, understand, and connect the many facets of weak gravitational lensing and its significance to cosmology. The phenomenon of weak gravitational lensing occurs when matter along the line of sight, which might otherwise be unobservable, magnifies and distorts the images of background galaxies. Dr. Seljak will make progress in this area of research by comparing his theoretical predictions to actual observations. He will make use of several observational surveys, including the Sloan Digital Sky Survey and the Deep Lens Survey. He will use these data to put constraints on the masses of neutrinos, the nature of the newly discovered dark energy, the presence of dark matter in clusters of galaxies, the effect of dark matter on the formation of galaxies, and the relationship between the clustering of dark matter and that of galaxies.As part of his educational mission, Dr. Seljak will work on developing an undergraduate course in computational physics at Princeton, using his research as examples. He will also integrate undergraduate students from all levels into his research group. Dr. Seljak will also participate in a local outreach program through which he will partner with a local teacher and participate in regular class visits.