Fig. 6.
From: Narrowband frequency-drift structures in solar type IV bursts
Calculated wave-dispersion relation based on the Appleton-Hartree equation for Ļp/Ļce = 10, fp = Ļp/2p = 325 MHz and Īø = 0Ā°. The solid line shows L-O mode wave, the dotted line does Langmuir wave, and the dashed line does whistler-mode wave. The arrows on the graph indicate the solution of the non-linear three-wave interaction, L + w ā T, for whistler-mode waves of 0.25Ļce.