472 citations · 5.8k across the 106 of their papers we have counts for
111 papers
Simulation Study of Binary Mergers of Galaxy Clusters I: Properties of Merger Shocks and Radio Emission
Hyesung Kang, Dongsu Ryu, Jeongbhin Seo
We investigate binary mergers of galaxy clusters, the formation of shocks, and the resulting radio relics using three-dimensional simulations. The initial setup consists of two ide…
Energy Spectrum and Mass Composition of Ultra-High-Energy Cosmic Rays Originating from Relativistic Jets of Nearby Radio Galaxies
Jeongbhin Seo, Dongsu Ryu, Hyesung Kang
Relativistic jets of radio galaxies (RGs) are possible sources of ultra-high-energy cosmic rays (UHECRs). Recent studies combining relativistic hydrodynamic simulations with Monte…
Diffusive Shock Acceleration Efficiencies for Weak ICM Shocks in the Test Particle Regime
Hyesung Kang
During the formation of large-scale structures in the universe, weak internal shocks are induced within the hot ICM, while strong accretion shocks arise in the WHIM within filament…
A Simulation Study of Low-Power Relativistic Jets: Flow Dynamics and Radio Morphology of FR-I Jets
Ayan Bhattacharjee, Jeongbhin Seo, Dongsu Ryu +1
Radio galaxies are classified into two primary categories based on their morphology: center-brightened FR-I and edge-brightened FR-II. It is believed that the jet power and interac…
Morphology and Mach Number Distribution of Merger Shock Surfaces in Merging Galaxy Clusters
Eunyu Lee, Dongsu Ryu, Hyesung Kang
In a binary merger of two subclusters with comparable masses, a pair of merger shocks are typically generated, often manifesting as double radio relics. Using cosmological hydrodyn…
Impact of Postshock Turbulence on the Radio Spectrum of Radio Relic Shocks in Merging Clusters
Hyesung Kang
This study investigates the impact of magnetic turbulence on cosmic ray (CR) electrons through Fermi-II acceleration behind merger-driven shocks in the intracluster medium and exam…