报告题目：SH0ES: absolute calibration of the luminosity of type Ia SNe and cosmological implications

报 告 人：Lucas Macri，Texas A&M University

报告时间：6月7日（周四）13：30

报告地点：物理系三楼报告厅

报告摘要：I will review the results of the SH0ES program (PI: A. Riess), which has recently obtained an absolute calibration of the luminosity of type Ia SNe via Cepheid variables and determined the value of H_0 with a total uncertainty of 3%. This provides important additional constraints on several cosmological parameters, such as the equation of state of dark energy and the number of neutrino species. I will also discuss future steps that may enable a determination of H_0 to 1%.