Dongsu Ryu

 

Department of Physics

College of Natural Science

Ulsan National Institute of Science and Technology (UNIST)

UNIST-gil 50, Ulsan, 44919, Korea

Phone: +82-52-217-2148

Fax: +82-52-217-2239

e-mail: dsryu_at_unist.ac.kr

web: http://sirius.unist.ac.kr/ryu/

 

 

Astrophysics Lab of Prof. Ryu

The universe contains cosmic plasma of baryonic matter, in addition to dark matter and dark energy. The so-called nonthermal components of the plasma, that is, shock waves, magnetic fields, cosmic rays and turbulence, are expected to play significant roles in the formation and observation of the large-scale structure of the universe. Yet their nature and origin are not fully understood. In the lab, the cosmic plasma as well as dark matter and dark energy are explored. Along with numerical simulations for the formation of the cosmic web, theoretical arguments based on plasma physical models for collisionless shock wave formation, cosmic ray acceleration, astrophysical turbulence, and magnetic field generation are employed.

 

 

Research Areas

        Shock waves and turbulence in clusters of galaxies

        Origin and evolution of magnetic fields and cosmic rays in the universe

        Plasma astrophysical phenomena in the large-scale structure of the universe

 

 

Education

        Ph.D. (Astronomy), University of Texas at Austin, USA, 1988

        M.A. (Astronomy), University of Texas at Austin, USA, 1985

        B.S. (Astronomy), Seoul National University, Korea, 1983

 

 

Employment and Academic Positions

        Endowed Chair Professor, Department of Physics, UNIST, Korea, 2023 - present

        Professor, Department of Physics, UNIST, Korea, 2014 - present

        Director of Center for High-Energy Astrophysics (CHEA), UNIST, Korea, 2016 - 2022

        Dean of College of Natural Science, UNIST, Korea, 2020 - 2022

        Dean of School of Natural Science, UNIST, Korea, 2017 - 2018

        Adjunct Researcher & Director of Center for Theoretical Astronomy, Korea Astronomy and Space Science Institute (KASI), Korea, 2016 – 2017

        PI of BK21 Plus, Department of Astronomy and Space Science, Chungnam National University, Korea, 2013 - 2014

        PI of Global Partnership Program, Department of Astronomy and Space Science, Chungnam National University, Korea, 2007 - 2010

        Assistant, Associate, Full Professors, Department of Astronomy and Space Science, Chungnam National University, Korea, 1992 - 2014

        Visiting Professor, University of Minnesota, USA, 2002 - 2003

        Visiting Professor, University of Washington, USA, 1996 - 1997

        Postdoctoral Researcher, Princeton University, USA, 1990 - 1992

        Postdoctoral Researcher, Astrophysics Group, Fermilab, USA, 1988 - 1990

 

 

Other Positions

        Member of The Korean Academy of Science and Technology, 2021 -

        President of Korean Astronomical Society, 2020 - 2021

        Vice President of Korean Astronomical Society, 2016 - 2017

        Vice Chair of Division of Plasma Physics, Association of Asia Pacific Physical Society, 2014 - 2017

        Member of Executive Committee of High Energy Density Laboratory Astrophysics, 2012 - 2019

        Chair of Program Committee, Korean Astronomical Society, 2012 – 2015

        Korea-Research-Foundation Endorsed Scholar, 2007 - 2017

        Seoam Fellow, Korea, 1996 - 1997

 

 

Selected Papers

        Effects of Multiscale Plasma Waves on Electron Preacceleration at Weak Quasi-perpendicular Intracluster Shocks, Ha, J.-H., Kim, S., Ryu, D., & Kang, H. 2021, The Astrophysical Journal, 915, 18 (15pp)

        Filaments of Galaxies as a Clue to the Origin of Ultra-High-Energy Cosmic Rays, Kim, J., Ryu, D., Kang, H., Kim, S., & Rey, S.-C. 2019, Science Advances, 5, eaau8227

        Properties of Merger Shocks in Merging Galaxy Clusters, Ha, J.-H., Ryu, D., & Kang, H. 2018, The Astrophysical Journal, 857, 26 (11pp)

        Turbulence and Magnetic Fields in the Large Scale Structure of the Universe, Ryu, D., Kang, H., Cho, J. & Das, S. 2008, Science, 320, 909 - 912

        Cosmological Shock Waves and Their Role in the Large Scale Structure of the Universe, Ryu, D., Kang, H., Hallman, E. & Jones, T. W. 2003, The Astrophysical Journal, 593, 599 - 610

        Cosmological Hydrodynamic Code Based on the Total Variation Diminishing Scheme, Ryu, D., Ostriker, J. P., Kang, H. & Cen R. 1993, The Astrophysical Journal, 414, 1 - 19

 

 

Vita and Publications

        Vita in English  &  Vita in Korean

        Publication (Papers Appeared in SCI Journals)

 

 

Personal Links

        Center for High-Energy Astrophysics (CHEA)