Abstract
The environment of compact objects of astrophysics contains a relativistic plasma that is often confined by a magnetic field. Magnetic disturbances of those plasmas have specific properties that are presented in this paper. Nonlinear dynamics are different in a pair plasma and in proton dominated plasma. The nonlinear disturbances of Alfvén type are interesting to accelerate relativistic particles and the extension of Fermi acceleration to a relativistic plasma as an accelerating medium turns out to be far more efficient than in a non-relativistic plasma. If it happens in Nature, as suggested by some observations, a head on collision of relativistic Alfvén solitons is a very efficient event to accelerate cosmic rays.
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Pelletier, G. (1999). Relativistic Alfvén Solitons and Acceleration of Cosmic Rays. In: Passot, T., Sulem, PL. (eds) Nonlinear MHD Waves and Turbulence. Lecture Notes in Physics, vol 536. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-47038-7_6
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DOI: https://doi.org/10.1007/3-540-47038-7_6
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