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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…
Radio surface fluctuations in radio relics
Paola Domínguez-Fernández, Dongsu Ryu, Hyesung Kang
Recent observations have revealed detailed structures of radio relics in a wide range of frequencies. In this work, we perform three-dimensional magnetohydrodynamical simulations o…