报告题目：Revealing the dark universe with redshift space distortion

报 告 人：张鹏杰，上海交通大学/上海天文台

报告时间：11月15日上午10：00

报告地点：物理系三楼报告厅

报告摘要： Peculiar motion of visible tracers of the dark universe, such as galaxies and 21cm emitting gas, induces a characteristic anisotropy in the otherwise isotropic 3D clustering of these tracers. This effect of redshift space distortion provides a promising tool to measure the structure growth rate of the universe and hence to probe dark matter, dark energy and gravity. I will explain the physics of redshift space distortion, review its cosmological applications, and elaborate on challenge and progress in theoretical modeling