Description
In the last decade, the measurements of cosmological parameters
has improved dramatically, and now we are entering the era of
precision cosmology.
I will present 2 major cosmological parameter measurements that
I have been involved in: 1. Baryon asymmetry and the Big Bang
Nucleosynthesis using quasar absorption lines. 2. The Supernova
Cosmology Project.
Based on the experience with 8-10m Telescopes and Hubble Space
Telescope observations, I will discuss which key issues we need
to attack for the further improvement of dark energy in the era
of NASA/DOE's Joint Dark Energy Mission (JDEM). As an example,
I will demonstrate the application of principal component analysis
(PCA) to the Type Ia supernova spectra which will play a key role
in the design and optimization of future surveys.