Oscillating Magnetic Trap and Non-Thermal Emission from Solar Flares

A comparative analysis of the fine time structure of microwave and hard X-ray emissions from the flare event on 1992 November 5 is given. Based on wavelet analysis, quasi-periodic pulsations with a fundamental period of 6 s in both wave bands have been revealed. The anticorrelation of time profiles of microwave and hard X-ray emissions as well as time delays between the emission peaks in different wave bands are explained by the excitation of sausage oscillations of a flare loop modelling by a magnetic trap. It has been shown that the intermediate pitch angle diffusion regime of trapped electrons into the loss-cone should be realized in flare loops. The relation between time delays of emission peaks at different wave bands and the pulse duration has been investigated.