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Clusters of Galaxies: Shock Waves and Cosmic Rays
Dongsu Ryu, Hyesung Kang
Recent observations of galaxy clusters in radio and X-ray indicate that cosmic rays and magnetic fields may be energetically important in the intracluster medium. According to the…
Acceleration of Cosmic Rays at Large Scale Cosmic Shocks in the Universe
Hyesung Kang, T. W. Jones
Cosmological hydrodynamic simulations of large scale structure in the universe have shown that accretion shocks and merger shocks form due to flow motions associated with the gravi…
Two-Dimensional Axisymmetric Collapse of Thermally Unstable Primordial Clouds
Chang Hyun Baek, Hyesung Kang, Dongsu Ryu
We have performed two-dimensional hydrodynamic simulations of the collapse of isolated axisymmetric clouds condensing via radiative cooling in a primordial background gas. In order…
Numerical Studies of Cosmic Ray Injection and Acceleration
Hyesung Kang, T. W. Jones, U. D. J. Gieseler
A numerical scheme that incorporates a thermal leakage injection model into a combined gas dynamics and cosmic ray (CR, hereafter) diffusion-convection code has been developed. The…
Structure Shocks as a Source of Cosmic Rays in Clusters
T. W. Jones, Francesco Miniati, Dongsu Ryu +2
Shocks are a ubiquitous consequence of cosmic structure formation, and they play an essential role in heating galaxy cluster media. Virtually all of the gas in clusters has been pr…