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: https://dongsuryu.github.io/

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)