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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
Mass composition of ultrahigh energy cosmic rays from distribution of their arrival directions with the Telescope Array File

Abbasi, R.U. , Abe, Y. , Abu-Zayyad, T. , Allen, M. , Arai, Y. , Arimura, R. , Barcikowski, E. , Belz, J.W. , Bergman, D.R. , Blake, S.A. , et al

Article Issue Date2024-07 View21
Isotropy of Cosmic Rays beyond 1020 eV Favors Their Heavy Mass Composition File

Abbasi, R.U. , Abe, Y. , Abu-Zayyad, T. , Allen, M. , Arai, Y. , Arimura, R. , Barcikowski, E. , Belz, J.W. , Bergman, D.R. , Blake, S.A. , et al

Article Issue Date2024-07 View19
Radio surface fluctuations in radio relics File File

Dominguez-Fernandez, P. , Ryu, Dongsu , Kang, H.

Article Issue Date2024-05 View30
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 View36
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 View36
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 View29
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 View31
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 View29
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 View30
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 View28
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 View25
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 View23
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 View905
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 View28
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 View21
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 View22
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 View26
Surface detectors of the TAx4 experiment File File

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

Article Issue Date2021-12 View33
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 View27
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 View23
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