My research interests are in high precision cosmology with large scale structure. I study the distributions of galaxies and matter on very large scales to infer how our Universe has expanded, what our Universe is composed of, and therefore to collect observational clues to identify dark energy and dark matter, which together makes up 95% of Universe while still being quite mysterious.

The main topics of my work involve the detection of the Baryon Acoustic Oscillations (BAO) from the large scale structure of galaxies and matter. This feature was formed in the very early, hot Universe by the sound waves propagated in the plasma of photons and baryons due to the interaction between photon pressure and gravity. The propagating sound waves have been frozen near the epoch of so called 'Recombination' when the baryons and photons are effectively separated.