I am a physicist/astronomer with 35 years experience in High Energy Astrophysics. From the very beginning of my scientific activity, I have been involved in both observational and theoretical studies of high-energy phenomena in the universe. My research interests cover a rather broad range of topical areas in astrophysics including Gamma Ray Astronomy, X-ray Astronomy, Neutrino Astronomy, Cosmic Rays, Particle Acceleration and Radiation Processes, Compact Objects (black holes, neutron stars), Physics and Astrophysics of sources with relativistic outflows (AGN, microquasars, pulsar winds).