Particle acceleration in impulsive solar flares

Details Particle acceleration in impulsive solar flares Particle acceleration in impulsive solar flares

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988soph..115..313s&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 115, no. 2, 1988, p. 313-326.

Physics

22

Electron Acceleration, Energy Dissipation, Interplanetary Space, Solar Electrons, Solar Flares, Coulomb Collisions, Particle Acceleration, Relativistic Electron Beams, Solar Corona, Stochastic Processes

Scientific paper

A model for second-step electron acceleration in impulsive solar flares is presented. The authors have extended the theory of stochastic particle acceleration to include Coulomb energy losses which become important at low coronal heights. This inclusion successfully explains the observed steepening of interplanetary electron spectra below ≅3 MeV following impulsive solar flares taking place at low coronal heights. It also explains the observed spectral differences of relativistic electrons in long-duration and impulsive flares.

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