The Principal Investigator is an expert in cluster cosmology, weak gravitational lensing, and spectroscopic galaxy surveys, with a research program focused on extracting precise cosmological information from large-scale structure. Her current work emphasizes the accurate physical modeling of systematics in cluster-based analyses and the development of methodologies that combine photometric and spectroscopic observations to improve cluster identification and mass calibration, particularly at higher redshift.

The PI was a co-lead of the Prime Focus Spectrograph (PFS) Cosmology Working Group, an ongoing spectroscopic survey using the 8.2m Subaru Telescope that will map approximately four million emission-line galaxies up to redshift z ≈ 2.4. In this role, the PI led scientific strategy and analysis development for cosmological applications of the PFS data.

In addition, the PI serves as a pipeline scientist for the LSST Dark Energy Science Collaboration (DESC) Cluster Working Group, contributing to the development of cluster cosmology pipelines designed to meet the stringent precision requirements of LSST. Through leadership roles in major international collaborations and close integration of theory, simulations, and data analysis, the PI is committed to advancing cluster cosmology in the era of next-generation surveys.

The research of the lab focuses on precision cosmology using galaxy clusters, with particular expertise in cluster cosmology, weak gravitational lensing, and spectroscopic galaxy surveys. The goal is to develop robust analysis frameworks that enable accurate cosmological inference in the presence of astrophysical and observational systematics.

A central theme of our work is the physical modeling of systematics in cluster-based cosmological analyses, including effects related to galaxy formation, selection biases, and mass calibration. We also develop methods to identify and characterize galaxy clusters at high redshift by jointly exploiting data from photometric and spectroscopic galaxy surveys. These efforts are especially timely as next-generation optical survey such as the Rubin Observatory Legacy Survey of Space and Time (LSST), which is expected to detect more than 100,000 galaxy clusters, ushering in a new era of precision cluster cosmology.

The lab combines large-volume cosmological simulations with realistic modeling of galaxy populations to bridge theory and observations. We construct mock galaxy and cluster catalogs and develop analysis pipelines that are directly applicable to current and upcoming surveys. Through this integrated approach, we aim to maximize the scientific return of cluster surveys and to use galaxy clusters as powerful probes of dark matter, cosmic structure formation, and fundamental physics.