Acceleration of 0.29- to 0.5-MeV protons by interplanetary shocks

Details Acceleration of 0.29- to 0.5-MeV protons by interplanetary shocks Acceleration of 0.29- to 0.5-MeV protons by interplanetary shocks

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.5525k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, June 1, 1988, p. 5525-5540.

Physics

3

Interplanetary Medium, Particle Acceleration, Proton Energy, Shock Waves, Computerized Simulation, Interplanetary Magnetic Fields, Magnetic Effects, Mathematical Models, Particle Trajectories, Plasma Density

Scientific paper

Observed magnetic fields, plasma density and velocity, and initial particle trajectories were calculated from real spacecraft orientations in a time-reversed computer simulation which follows particles through a single complete interaction with a shock. These values were used to predict the acceleration of energetic (0.29-0.5 MeV) protons by interplanetary shocks. Conditions for two specific well-observed interplanetary shocks, namely, the 1974 day 312 shock and the 1979 day 95 shock, were simulated, and the results were compared with observations. In spite of the simplicity of the shock model used, the predicted results (including, in particular, the angular flux enhancements for protons with energies between 0.29 and 0.5 MeV) correctly reproduced the observed features of both shocks.

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