Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..274..252k&link_type=abstract
Advances in Plasma Astrophysics, Proceedings of the International Astronomical Union, IAU Symposium, Volume 274, p. 252-254
Astronomy and Astrophysics
Astrophysics
Waves, Radiation Mechanisms: General, Sun: Radio Radiation
Scientific paper
Using a 2.5-D electromagnetic particle-in-cell (PIC) model, very early stages of a generation of the electromagnetic emission produced by a monochromatic Langmuir wave are studied. It is found that the electromagnetic emission, which is dominant on the harmonic of the plasma frequency, starts to be generated in a very small region of k-vectors. Later on the k-vectors of this emission are scattered around a `circle' (in our 2-D case), given by the relations for the L+L'->T process. Analytical analysis of two subsequent processes L->L'+S a L+L'->T confirms these results.
Barta Miroslav
Karlicky Marian
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