천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제46권2호
- /
- Pages.39.2-39.2
- /
- 2021
- /
- 1226-2692(pISSN)
FR-II radio jets and the acceleration of UHECRs
- Seo, Jeongbhin (Pusan National University) ;
- Kang, Hyesung (Pusan National University) ;
- Ryu, Dongsu (Ulsan Institute of Science and Technology)
- 발행 : 2021.10.13
초록
To investigate the acceleration of ultra-high energy cosmic rays (UHECRs) in relativistic jets of FR-II galaxies, we simulate high-power jets with jet powers of Q~10^46erg/s in a stratified galaxy cluster halo using a state-of-art relativistic hydrodynamic (RHD) code we have recently developed. With the simulated jet-induced flow profiles, we then perform Monte-Carlo simulations, where the transport of high-energy particles is followed assuming large-angle scatterings in the flow-rest frame. We estimate the energy gains and acceleration times in the acceleration processes by shocks, shear, and turbulence. We present the results and discuss implications on the acceleration of UHECRs in FR II radio jets.
키워드