Research Interests

Physics of Dark Matter Halos

• Dynamical structure of cold dark matter haloes and origin of scaling laws
• Tidal interactions in sub-galactic dark matter haloes
• Formation of dark-matter-deficient galaxies
• Effects of Landau resonances on the cusp-core problem in cold dark matter models
• Missing satellite problem in cold dark matter models and the collision of dark matter sub-haloes

Galaxy Collisions

• Galaxy collisions and self-gravitational hydrodynamic instabilities
• Galaxy collisions and the interstellar medium in a galaxy disk
• Formation of the Andromeda Giant Southern Stream

Galaxy Formation

• Formation and evolution of proto-galaxies
• Formation of Lyman alpha emitters

Galaxy Evolution

• Supernova-driven galactic wind
• An analytical model of transonic galactic winds

Galactic Habitable Zone

• Galaxy Collisions and Galactic Habitable Zone

Development and acceleration of numerical simulation codes

• Development of an ultra-high accuracy fluid dynamics simulation code (Godunov-Density-Independent SPH)
• A Hamiltonian Splitting for Smoothed Particle Hydrodynamics
• GPU acceleration of N-body simulation using Hermite integrals

Collaborators

• Prof. Andreas Burkert (Ludwig-Maximilians-University of Munich, Max-Planck-Institut für Extraterrestrische Physik)
• Prof. Gerhard Hensler (University of Vienna)
• Dr. Michael Rich (University of California, Los Angeles)
• Prof. Masashi Chiba(Tohoku University)