Radiation from a Whistler Soliton in Interaction with a Plasma Wave

Transverse waves at the fundamental ($F$) and second-harmonic whistler sidebands of ${\omega }_p$ can be excited via the nonlinear electron current ${\overrightarrow{\mathrm{j}}}_{\mathrm{nl}}=-en\overrightarrow{\mathrm{v}}$ generated by whistler solitons interacting with Langmuir waves. The intensity of the emission is higher than in the weak-turbulence three-wave interaction regime. Radiation at $F$ dominates. For oblique propagation angles it is in the extraordinary as well as in the ordinary mode.