Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...291..687p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 291, no. 2, p. 687-692
Astronomy and Astrophysics
Astrophysics
2
Cosmic Plasma, Cosmic Rays, Magnetic Fields, Magnetohydrodynamic Stability, Normal Shock Waves, Oblique Shock Waves, Particle Acceleration, Shock Wave Propagation, Magnetic Effects, Magnetohydrodynamic Waves, Wave-Particle Interactions
Scientific paper
In a previous paper (Pajot-El Abed et al. 1992) we considered the influence of the magnetic field curvature and gradient on instabilities that can create the turbulence necessary for diffusive particle acceleration. This work, restricted to waves propagating normal to the magnetic field, introduced the resonance between the wave phase velocity and the particle's drift due to the field geometry. In the present work we consider waves propagating oblique to the field. We find that the parallel motion combined to the drift causes strong instabilities, and introduces complex resonance patterns which might have important consequences on the diffusive acceleration mechanism.
Melikidze George
Pajot-El Abed Ph.
Tagger Michel
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