Název:
On maximum energy cutoff in the hotspot of radiogalaxies 3C 105 and 3C 445
Autoři:
Pulnova, Y. ; Araudo, Anabella Typ dokumentu: Příspěvky z konference Konference/Akce: RAGtime /20.-22./, Opava (CZ), 20181015
Rok:
2020
Jazyk:
eng
Abstrakt: The origin of Ultra-High-Energy Cosmic Rays is still unknown, and Active Galactic Nuclei have been proposed as candidates to accelerate these particles. Using thewell-resolved radio emission from radiogalaxies 3C 105 and 3C 445 we investigate the standard assumption that the distribution of non-thermal electrons has a maximum energy cutoff due to the synchrotron cooling. We show that as a consequence this would lead to an unphysically large number density in the hotspot. This result has important implications for the origin of Ultra-High-Energy Cosmic Rays.
Klíčová slova:
diffusive shock acceleration; synchrotroncooling; ultra-high-energy cosmic rays Číslo projektu: GA20-19854S (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: Proceedings of RAGtime 20/22: Workshops on black holes and neutron stars, ISBN 978-80-7510-433-5