2007•Kinematics and Physics of Celestial BodiesRequires access

Cosmic rays in central regions of active galaxies

Volodymyr Kryvdyk

Abstract

We consider the acceleration of charged particles by the Fermi mechanism on magnetic field irregularities in active galactic regions. The relativistic particles are shown to be accelerated most efficiently, while the acceleration of nonrelativistic particles by this mechanism is possible only in highly nonuniform galactic nuclei, that is, in nuclei with strong turbulization. The conditions for the acceleration of charged particles in active galactic nuclei at various stages of their evolution are investigated.

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Key concepts: Physics, Active galactic nucleus, Cosmic ray, Fermi acceleration, Acceleration, Fermi Gamma-ray Space Telescope, Charged particle, Particle acceleration