EPJ Web Conf.
Volume 283, 2023Ultra High Energy Cosmic Rays (UHECR 2022)
|Number of page(s)||6|
|Section||UHECR Sources, Acceleration Mechanisms and Multi-Messenger Astrophysics|
|Published online||28 April 2023|
Cosmic ray acceleration by multiple shocks in the jets of Active Galactic Nuclei
1 Extreme Light Infrastructure ERIC,ELI Beamlines Facility, Za Radnicí 835, CZ-25241 Dolní Bˇrežany, Czech Republic
2 Laboratoire Univers et Particules de Montpellier (LUPM) Université Montpellier, CNRS/IN2P3, CC72, place Eugène Bataillon, 34095, Montpellier Cedex 5, France
* Corresponding author: firstname.lastname@example.org
** Corresponding author: email@example.com
Published online: 28 April 2023
Active galactic nuclei are one of the most promising sources for accelerating particles up to the highest energies. In this contribution, we present a scenario in which cosmic rays are accelerated in multiple shocks created by the interaction of relativistic AGN jets with the winds of embedded massive stars. We solve the Fokker-Planck equation considering escape and radiative losses as well as the collective effect of the shocks and the reacceleration of the particles. Finally, we calculate the maximum energies that the particles can achieve and discuss the possibility of producing ultra-high energy cosmic rays in this astrophysical situation.
© The Authors, published by EDP Sciences, 2023
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