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류동수
Ryu, Dongsu

류동수

Department of Physics(물리학과)

Research Interests
Astrophysics;Shock waves;Galaxy clusters;High Energy Astrophysics;Plasma Astrophysics;Cosmology;천체물리학;은하단
Lab Description
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
Researcher ID Research Gate ORCiD Scopus Google Scholar
Previous
Model Spectrum of Ultrahigh-energy Cosmic Rays Accelerated in FR-I Radio Galaxy Jets File File

Seo, Jeongbhin , Ryu, Dongsu , Kang, Hyesung

Article Issue Date2024-02 View12
An extremely energetic cosmic ray observed by a surface detector array File

Fujii, Toshihiro , Allen, M. G. , Abbasi, R. U. , Arimura, R. , Belz, J. W. , Bergman, D. R. , Blake, S. A. , Shin, B. K. , Buckland, I. J. , Cheon, B. G. , et al

Article Issue Date2023-11 View4
The energy spectrum of cosmic rays measured by the Telescope Array using 10 years of fluorescence detector data File

Abbasi, R.U. , Abe, Y. , Abu-Zayyad, T. , Allen, M. , Bergman, D.R. , Ryu, Dongsu , Shin, B.K.

Article Issue Date2023-09 View13
HOW-MHD: A High-order WENO-based Magnetohydrodynamic Code with a High-order Constrained Transport Algorithm for Astrophysical Applications File File

Seo, Jeongbhin , Ryu, Dongsu

Article Issue Date2023-08 View4
First High‐Speed Video Camera Observations of a Lightning Flash Associated With a Downward Terrestrial Gamma‐Ray Flash File File

Abbasi, R. U. , Saba, M. M. F. , Belz, J. W. , Krehbiel, P. R , Ryu, Dongsu

Article Issue Date2023-07 View11
Electron-Ion Temperature Ratio in Astrophysical Shocks File

Raymond, John C. , Ghavamian, Parviz , Bohdan, Artem , Ryu, Dongsu , Niemiec, Jacek , Sironi, Lorenzo , Tran, Aaron , Amato, Elena , Hoshino, Masahiro , Pohl, Martin , et al

Article Issue Date2023-06 View10
A Simulation Study of Ultra-relativistic Jets. III. Particle Acceleration in FR-II Jets File File

Seo, Jeongbhin , Ryu, Dongsu , Kang, Hyesung

Article Issue Date2023-02 View5
Cosmic-Ray Acceleration and Nonthermal Radiation at Accretion Shocks in the Outer Regions of Galaxy Clusters File File

Ha, Ji-Hoon , Ryu, Dongsu , Kang, Hyesung

Article Issue Date2023-02 View10
Search for Spatial Correlations of Neutrinos with Ultra-high-energy Cosmic Rays File File

A. Albert. , IceCube Collaboration , Pierre Auger Collaboration , Telescope Array Collaboration , Ryu, Dongsu , Shin, B. K.

Article Issue Date2022-08 View5
Insensitivity of a turbulent laser-plasma dynamo to initial conditions File File

Bott, A. F. A. , Chen, L. , Tzeferacos, P. , Palmer, C. A. J. , Bell, A. R. , Bingham, R. , Birkel, A. , Froula, D. H. , Katz, J. , Kunz, M. W. , et al

Article Issue Date2022-06 View187
Strong suppression of heat conduction in a laboratory replica of galaxy-cluster turbulent plasmas File File

Meinecke, Jena , Tzeferacos, Petros , Ross, James S. , Bott, Archie F. A. , Feister, Scott , Park, Hye-Sook , Bell, Anthony R. , Blandford, Roger , Berger, Richard L. , Bingham, Robert , et al

Article Issue Date2022-03 View5
Observation of variations in cosmic ray single count rates during thunderstorms and implications for large-scale electric field changes File

Abbasi, R. U. , Abu-Zayyad, T. , Allen, M. , Arai, Y. , Ryu, Dongsu , Shin, B. K.

Article Issue Date2022-02 View4
Effects of Forcing on Shocks and Energy Dissipation in Interstellar and Intracluster Turbulences File File

Cho, Hyunjin , Ryu, Dongsu , Kang, Heysung

Article Issue Date2022-02 View3
Electron Preacceleration at Weak Quasi-perpendicular Intracluster Shocks: Effects of Preexisting Nonthermal Electrons File File

Ha, Ji-Hoon , Ryu, Dongsu , Kang, Hyesung , Kim, Sunjung

Article Issue Date2022-01 View11
Surface detectors of the TAx4 experiment File File

Kido, E , Kuzmin, V , Ryu, Dongsu , The Telescope Array Collaboration

Article Issue Date2021-12 View12
A Simulation Study of Ultra-relativistic Jets. II. Structures and Dynamics of FR-II Jets File

Seo, Jeongbhin , Kang, Hyesung , Ryu, Dongsu

Article Issue Date2021-10 View15
A Simulation Study of Ultra-relativistic Jets–I. A New Code for Relativistic Hydrodynamics File

Seo, Jeongbhin , Kang, Hyesung , Ryu, Dongsu , Ha, Seungwoo , Chattopadhyay, Indranil

Article Issue Date2021-10 View8
Inefficient Magnetic-Field Amplification in Supersonic Laser-Plasma Turbulence File File

Bott, A. F. A. , Chen, L. , Boutoux, G. , Caillaud, T. , Duval, A. , Koenig, M. , Khiar, B. , Lantuéjoul, I. , Le-Deroff, L. , Reville, B. , et al

Article Issue Date2021-10 View8
Effects of Multiscale Plasma Waves on Electron Preacceleration at Weak Quasi-perpendicular Intracluster Shocks File

Ha, Ji-Hoon , Kim, Sunjung , Ryu, Dongsu , Kang, Hyesung

Article Issue Date2021-07 View6
Supernova Model Discrimination with Hyper-Kamiokande File

Abe, K. , Adrich, P. , Aihara, H. , Akutsu, R. , Alekseev, I. , Ali, A. , Ameli, F. , Anghel, I. , Anthony, L. H. V. , Antonova, M. , et al

Article Issue Date2021-07 View7
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