Physics
Scientific paper
Mar 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977soph...51..435m&link_type=abstract
Solar Physics, vol. 51, Mar. 1977, p. 435-458.
Physics
7
Coherent Electromagnetic Radiation, Plasma Waves, Solar Corona, Type 4 Bursts, Continuous Radiation, Solar Electrons, Solar Magnetic Field, Wave Interaction
Scientific paper
The investigated model supposes Bernstein waves emerging from Harris instabilities at a definite coronal level. The nonlinear process is considered for a higher region, where the quasimonochromatic waves forming the primary spectrum are reflected. Spatial dispersion takes place corresponding to the decreasing magnetic field. According to the nonlinear resonance condition, there result electromagnetic waves of twice the primary frequency, the power density of which is calculated. Assuming a coherence time of 480 periods and an oscillation velocity of the electrons of 0.001 times the thermal velocity, the effective radiation temperature 10 to the 11th K of a type IVmA-burst is obtained at about 180 MHz, if the range of the nonlinear interaction is about 3.9 km long.
Mollwo L.
Sauer Ken
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