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류동수
Ryu, Dongsu

류동수

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
Full EPIC-GOD: An energy-conserving full particle-in-cell code for GPU acceleration using OpenACC File

Kim, Sunjung , Choe, G. S. , Ryu, Dongsu , Yi, Sibaek

Article Issue Date2026-04 View25
Hybrid EPIC-GOD: An energy-conserving hybrid particle-in-cell code for GPU acceleration using OpenACC File

Kim, Sunjung , Ryu, Dongsu , Choe, G. S. , Yi, Sibaek

Article Issue Date2025-10 View102
Time-Resolved Leader Spectra of Downward Terrestrial Gamma-Ray Flashes Observed at the Telescope Array Surface Detector File

Kieu N. , Rubtsov G. I. , Ryu, Dongsu , Shin B. K. , Smith J. D. , Warren D. , Yamazaki K. , Zhezher Y. , Zundel Z. , Zvirzdin J.

Article Issue Date2025-08 View23
Energy Spectrum and Mass Composition of Ultra-high-energy Cosmic Rays Originating from Relativistic Jets of Nearby Radio Galaxies File

Seo, Jeongbhin , Ryu, Dongsu , Kang, Hyesung

Article Issue Date2025-08 View109
Neutrinos from Carbon-burning Red Supergiants and Their Detectability File

Seong, Gwangeon , Kwak, Kyujin , Ryu, Dongsu , Shin, Bok-Kyun

Article Issue Date2025-03 View103
Morphology and Mach Number Distribution of Merger Shock Surfaces in Merging Galaxy Clusters File

Lee, Eunyu , Ryu, Dongsu , Kang, Hyesung

Article Issue Date2025-01 View116
First Time‐Resolved Leader Spectra Associated With a Downward Terrestrial Gamma‐Ray Flash Detected at the Telescope Array Surface Detector File

Kieu, N. , Ryu, Dongsu , Shin, B. K.

Article Issue Date2024-12 View106
Intermediate Fluence Downward Terrestrial Gamma Ray Flashes as Observed by the Telescope Array Surface Detector File

Abbasi, R. U. , Shin, B. K. , Ryu, Dongsu

Article Issue Date2024-12 View152
A Simulation Study of Low-power Relativistic Jets: Flow Dynamics and Radio Morphology of FR-I Jets File

Bhattacharjee, Ayan , Seo, Jeongbhin , Ryu, Dongsu , Kang, Hyesung

Article Issue Date2024-11 View108
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 View114
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 View120
Radio surface fluctuations in radio relics File File

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

Article Issue Date2024-05 View161
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 View145
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 View135
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 View136
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 View144
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 View152
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 View136
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 View145
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 View142
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