Cosmic rays and shock waves in active galaxies

Details Cosmic rays and shock waves in active galaxies Cosmic rays and shock waves in active galaxies

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..264..417w&link_type=abstract

In: Particle acceleration in cosmic plasmas; Proceedings of the Workshop, Bartol Research Inst., Newark, DE, Dec. 4-6, 1991 (A93

Mathematics

Logic

Active Galaxies, Galactic Cosmic Rays, Nonthermal Radiation, Particle Acceleration, Radio Galaxies, Shock Wave Interaction, Astronomical Models, Electron Acceleration, Radio Emission

Scientific paper

Studies of nonthermal radio emission in the inner regions of active galaxies reveal clear morphological evidence for shock waves. It is argued that the shocks are driven by collimated outflow of plasma from the AGN. I describe a model in which the synchrotron radio emission arises from ambient relativistic electrons and magnetic fields which have been compressed in a radiative shock wave. No active particle acceleration at the shock front is required in this picture. The prospects for diagnosing active acceleration from radio continuum and optical emission line observations are briefly discussed.

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