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In the present paper we investigate the production of ultrahigh energy cosmicrays (UHECRs) from Seyferts. We discuss the UHECR luminosities obtained by twopossible engine trigger models: pure radiative transfer and the energyextraction from poloidal magnetic flux. The first case is modeled by Kerr slimdisk or Bondi accretion mechanisms. Since it is assumed that the broadbandspectra of Seyferts indicate that at least the outer portions of theiraccretion disks are cold and geometrically thin, and since our results pointthat the consequent radiative energy transfer is inefficient, we build thesecond approach based on massive Seyferts with sufficient central poloidalmagnetic field to trigger an outflow of magnetically driven charged particlescapable to explain the observed UHECRs and gamma rays in Earth experiments froma given Seyfert source.

Central accumulation of magnetic flux in massive Seyfert galaxies as a possible engine to trigger ultrahigh energy cosmic rays