Speaker
Dr
Donghui Jeong
(Penn State U.)
Description
HETDEX (Hobby-Eberly Telescope Dark Energy eXperiment) is a galaxy survey targeting Lyman-alpha emitters (LAEs) at high redshifts (1.9 < z < 3.5). Starting from late 2015, the survey will observe about a million LAEs over ~400 sq. degrees, which corresponds to ~10Gpc3 in volume. The main science goal of HETDEX is to measure the angular diameter distance and the Hubble expansion rate at high redshifts (z~2.5 and z~3) within a percent accuracy, so that we can measure the dark energy density better than 3-σ. In this talk, I will introduce the HETDEX survey, summarize the survey design, observing strategy, as well as various cosmological information that the dataset can provide.
