Physics – Plasma Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh22a..06r&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SH22A-06
Physics
Plasma Physics
[7509] Solar Physics, Astrophysics, And Astronomy / Corona, [7514] Solar Physics, Astrophysics, And Astronomy / Energetic Particles, [7519] Solar Physics, Astrophysics, And Astronomy / Flares, [7867] Space Plasma Physics / Wave/Particle Interactions
Scientific paper
Impulsive solar energetic particle events have an attractive diagnostic potential for poorly understood particle acceleration processes in solar flares. Some solar energetic particle events are believed to propagate almost scatter-free from the Sun, and hence their spectrum should be that of accelerated particles. We simulate propagation of energetic electrons from the Sun to the Earth including wave-particle interactions in the inhomogeneous heliospheric plasma. We show the that an injected single power-law spectrum will be detected at 1AU as a broken power-law due to wave-particle interaction in the inhomogeneous plasma. It is demonstrated that the large scale density inhomogeneity as well as small scale density fluctuations affecting Langmuir waves are indirectly responsible for flattening the electron spectra below the break energy.
Kontar Eduard
Reid Hamish
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