Starburst galaxies and active galactic nuclei are promising candidates for accelerators of ultra-high energy cosmic rays. Processes taking place in both astrophysical sources are capable of releasing large amounts of energy, which can be converted into relativistic particles in specific situations. The theoretical arguments are supported by observational evidence showing that these objects are non-thermal emitters at different wavelengths. Additionally, the Pierre Auger and the IceCube Collaborations have found hints of correlation between the arrival directions of cosmic rays and neutrinos and the position of starburst galaxies and active galactic nuclei. In this talk I will present results for the production of cosmic rays in the superwind region of starburst galaxies and the expected non-thermal emission, as well as an alternative model to explain the observed gamma radiation of non-jetted active galactic nuclei.

Location: zoom

https://cesnet.zoom.us/j/94860642965?pwd=T25mNW9YNmJQRkhLaE9aT2dQMDdtZz09