Physics
Scientific paper
Jan 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90...19s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Jan. 1, 1985, p. 19-27.
Physics
53
Energetic Particles, Interplanetary Space, Particle Acceleration, Shock Waves, Space Plasmas, Anisotropy, International Sun Earth Explorer 3, Statistical Analysis
Scientific paper
The present investigation is concerned with a comparison of the results of a survey of three-dimensional anisotropies of 35- to 1000-keV protons with the predictions of models which have been developed to explain the proton intensity increases observed together with interplanetary shocks. It is found that a small number of shock events can be identified with the signature of Fermi acceleration and a somewhat larger number of events with the signatures of shock drift acceleration. The Fermi acceleration mechanism is associated with strong, fast quasi-parallel shocks, whereas the shock drift mechanism is associated with weaker, slower quasi-perpendicular shocks.
Reinhard Rüdeger
Sanderson T. R.
van Nes P.
Wenzel Klaus-Peter
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