Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...622l.157s&link_type=abstract
The Astrophysical Journal, Volume 622, Issue 2, pp. L157-L160.
Astronomy and Astrophysics
Astronomy
5
Sun: Flares, Sun: Radio Radiation
Scientific paper
We investigate the wave emission process of solar type III radio bursts from a magnetic reconnection region in a solar flare by using a two-dimensional, electromagnetic, relativistic particle-in-cell code. We initially impose two plasma populations: background dense plasma and hot electrons that can be generated by the magnetic reconnection process in a solar flare. We investigated two cases: model 1, where the hot electron beams propagate obliquely to the magnetic field, and model 2, where the hot electron beams propagate along the magnetic field. We found that hot electron plasmas lead to the generation of Langmuir waves and the generated Langmuir waves can be converted to electromagnetic waves (solar type III radio bursts) through the direct linear mode conversion process. The second harmonic emission is generated with time delay and an amplitude larger than that of fundamental emission.
Kitamoto T.
Saito Shuji
Sakai Jun-Ichi
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