Particle acceleration in disordered magnetic fields

Details Particle acceleration in disordered magnetic fields Particle acceleration in disordered magnetic fields

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..264..298h&link_type=abstract

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

Astronomy and Astrophysics

Astronomy

Energetic Particles, Galactic Cosmic Rays, Magnetic Flux, Particle Acceleration, Shock Wave Interaction, Supernova Remnants, Astronomical Models, Distribution Functions

Scientific paper

We investigate particle acceleration in highly disordered magnetic fields, following particle trajectories numerically. We find that mildly relativistic shocks give rise to synchrotron emission with a spectral index about 0.5-0.7, in excellent agreement with low-frequency optically thin synchrotron emission from active galaxies. For highly relativistic shock speeds the spectrum steepens. This behavior may be connected with the observed steepening of synchrotron spectra with radio power observed in powerful radio sources.

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