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Research Fields Astrophysics Research Subjects Galaxy formation Formation of massive black holes Computational astrophysics Academic Society Membership   Research Outline   A Milky Way galaxy has a hundred billion stars and a massive black hole of two million solar masses. The formation and evolution mechanism of Galaxy have not been understood yet. First generation galaxies (first galaxies), which can be building blocks of current massive galaxies including a Milky Way, formed at several hundred million years after big bang. First galaxies could suffer from strong radiation feedback from young stars and black holes, and supernovae feedback. Because of the complicated feedback processes, the formation mechanism of the first galaxies is still under the debate. In addition, we have to understand how stars and massive black holes formed and affect the evolution of the first galaxies simultaneously. One of my main research goals is to reveal the formation mechanism of the first galaxies by using state-of-the-art numerical simulations that follow the complicated physical processes. The numerical simulations require a huge amount of computational memory and tasks in order to follow galaxies to internal star forming regions simultaneously. I am trying to communicate with researchers in other fields (high-performance computing, chemistry, and etc.) to carry out the above expensive calculations successfully, and also developing a new method and creating new relating topics. 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