Abstract:We perform an observational test of the hypothesis that ultra-high energy cosmic rays (E > 1020 eV) are accelerated in giant flares of active galactic nuclei (AGN). We use the observations of Fermi LAT during the first 7.4 years of the mission. We select highly variable AGNs with the redshift z ≤ 0:3 and use an empirical relation between the bolometric luminosity and the jet kinetic power in order to find the local kinetic emissivity of strong AGN flares: L ~ 1:1 × 1045erg Mpc-3 yr-1. This is approximately … Show more
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