Some characteristics of ultra-fast time structures superimposed on impulsive mm-wave bursts

The paper discusses the ultra-fast time structures superimposed on impulsive bursts revealed by increased sensitivity and temporal resolution at mm-wavelengths. These structures are distinguished by time scales with repetition rates shorter than the impulsive time scales. The superimposed spikes are separated by several seconds for weak bursts; for moderate fluxes, the repetition rate of the spikes is 10-15/sec; for bursts larger than 500 s.f.u., the projected times between repeated ultra-fast structures are shorter than 10 msec. It is concluded that the injected spikes are associated with the bursting source function and are quasi-quantized in energy.