Fermi acceleration in astrophysical jets

Details Fermi acceleration in astrophysical jets Fermi acceleration in astrophysical jets

2006-10-05

arxiv.org/abs/astro-ph/0610141v1

Astrophys.SpaceSci.309:119-125,2007

Astronomy and Astrophysics

Astrophysics

6 pages, one figure; based on talk at "The multimessenger approach to unidentified gamma-ray sources", Barcelona/Spain, July 2

Scientific paper

10.1007/s10509-007-9466-z

We consider the acceleration of energetic particles by Fermi processes (i.e., diffusive shock acceleration, second order Fermi acceleration, and gradual shear acceleration) in relativistic astrophysical jets, with particular attention given to recent progress in the field of viscous shear acceleration. We analyze the associated acceleration timescales and the resulting particle distributions, and discuss the relevance of these processes for the acceleration of charged particles in the jets of AGNs, GRBs and microquasars, showing that multi-component powerlaw-type particle distributions are likely to occur.

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