3 papers
astro-ph.HE2019
Propagation of ultra-high-energy cosmic rays in the magnetized cosmic web
Jihyun Kim, Dongsu Ryu, Soonyoung Roh +2
A high concentration of ultra-high-energy cosmic ray (UHECR) events, called a hotspot, was reported by the Telescope Array (TA) experiment, but its origin still remains unsolved. O…
astro-ph.HE2019
Shock acceleration efficiency in radio relics
A. Botteon, G. Brunetti, D. Ryu +1
Radio relics in galaxy clusters are giant diffuse synchrotron sources powered in cluster outskirts by merger shocks. Although the relic-shock connection has been consolidated in re…
astro-ph.HE2019
Turbulence Dynamo in Galaxy Clusters
Soonyoung Roh, Dongsu Ryu, Hyesung Kang +2
The existence of microgauss magnetic fields in galaxy clusters have been established through observations of synchrotron radiation and Faraday rotation. They are conjectured to be…