Particle Acceleration at Shock Waves

Details Particle Acceleration at Shock Waves Particle Acceleration at Shock Waves

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmng23a..04z&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #NG23A-04

Physics

Plasma Physics

7845 Particle Acceleration, 7851 Shock Waves (4455), 7859 Transport Processes, 7867 Wave/Particle Interactions (2483, 6984)

Scientific paper

Particle acceleration by shock waves is ubiquitous, occurring in almost every conceivable astrophysical environment, ranging from supernovae to the solar corona. The original theory is now over 25 years old and has seen much modification and been applied widely. Particle acceleration by shock waves in the solar wind (interplanetary shocks, bow shocks, the heliospheric termination shock) presents an opportunity to investigate in situ the plasma physics of the original particle acceleration theories. Not surprisingly, the detailed observations raise as many questions as they answer. We review the elementary theory, show how a time- dependent application of these ideas to interplanetary shocks can explain many of the characteristics of gradual solar energetic particle events, discuss how we need to extend our ideas to describe shock acceleration at quasi-perpendicular shocks, and briefly consider the acceleration of low energy ions at a shock using an extension of the simpler Parker transport equation.

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