Digitally recorded type I bursts and some theoretical aspects of continuum and burst generation

An analysis of digitally recorded type-I bursts is presented. The reduction procedure is described and some typical examples and results are presented. A model for type-I emission, compatible with low magnetic field strengths, is proposed. Incoherent Langmuir waves, spontaneously emitted by trapped fast electrons, are converted to transverse radiation by coalescence with low-frequency whistlers. Recurrent upper hybrid instability in strong MHD pulses explains the bursts in this model.