On the origin of relativistic particles and gamma-rays in quasars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Gamma Rays, Particle Acceleration, Quasars, Relativistic Particles, Accretion Disks, Active Galactic Nuclei, Black Holes (Astronomy), High Energy Electrons, Kinetic Energy, Mathematical Models, Protons

Scientific paper

A model for a class of quasars and active galactic nuclei is proposed in which a shock around a massive black hole randomizes the infall kinetic energy of spherically accreting matter producing a nonthermal spectrum of high energy protons. It is suggested that these protons are responsible for the secondary production (via proton decay) of the radio emitting high energy electrons and also of high energy gamma-rays (via proton decay and inverse Compton interactions of the electrons). The correlation between radio and gamma-ray emission implied by the model is in good agreement with observations of 3C273. Observation of the flux of high energy neutrinos from quasars may provide a test for the model.

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