  Particle acceleration induced by fast magnetic reconnection may help to solve
current puzzles related to the interpretation of the very high energy (VHE) and
neutrino missions from AGNs and compact sources in general. Our general
relativistic-MHD simulations of accretion disk-corona systems reveal the growth
of turbulence driven by MHD instabilities that lead to the development of fast
magnetic reconnection in the corona. In addition, our simulations of
relativistic MHD jets reveal the formation of several sites of fast
reconnection induced by current-driven kink turbulence. The injection of
thousands of test particles in these regions cause acceleration up to energies
of several PeVs, thus demonstrating the ability of this process to accelerate
particles and produce VHE and neutrino emission, specially in blazars. Finally,
we discuss how reconnection can also explain the observed VHE luminosity-black
hole mass correlation, involving hundreds of non-blazar sources like Perseus A,
and black hole binaries.
