Impulsive Flare Energy Transport by Large-Scale Alfven Waves and the Electron Acceleration Problem

Details Impulsive Flare Energy Transport by Large-Scale Alfven Waves and the Electron Acceleration Problem Impulsive Flare Energy Transport by Large-Scale Alfven Waves and the Electron Acceleration Problem

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm53b1278f&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SM53B-1278

Physics

7507 Chromosphere, 7519 Flares, 7524 Magnetic Fields, 7845 Particle Acceleration, 7859 Transport Processes

Scientific paper

In this poster, we investigate an alternative scenario for solar flare energy transport. Usually, the energy stored in the solar corona and released during a flare is thought to be transported to the lower atmosphere by electron beams. However, based on microwave observations, magnetic fields of the order of a few 100 Gauss to a kilogauss are measured in the corona above the core of an active region. This implies an Alfvén speed on the order of 0.1c, meaning that Alfvén wave pulses become plausible agents for transporting the stored energy of the flare. We investigate this scenario, and the opportunities it presents for both heating the lower chromosphere and accelerating electrons to HXR-emitting energies.

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