The Study of Solar Radio Fine Structure at High Time-and Frequency-resolution

In this thesis,the field of solar radio fast fine structures is investigated.It is found that many fast fine structures have not been resolved in the plane of the frequency and the time, or they have not been detected because of the relatively lower technical parameters, such as time resolution, spectral resolution, frequency range, polarization measurement, and sensitivity in the observing instruments. The observational data of fast fine structures are not abundant, specially in the high part of the microwave (centimetric wavelength). Moreover, the classification of the fast fine structures is only morphological up to date. Based on the observational data of the new Broad Band Fast Solar Radio Spectrometer in China,the scientific results are obtained as follows: (1) The time delay between the two polarization modes and the reversal of the two polarization mode of the weak polarized microwave spikes are found and interpreted. (2) Through a statistics of the large sample, a smaller and relatively reliable values of the relative bandwidth of the decimetric spikes are given and the other observational characteristics of these decimetric spikes are also discussed. (3) The microwave type U bursts with the high polarization degree are discovered and explained for the first time. (4) The generation and position of the biderectional electron beams are discussed. (5) The high polarized microwave type Ⅲ bursts and its quasi-periodic oscillations are studied. (6) The report and research on the microwave high polarized patch structures are given for the first time. (7) The report and research on the centimetric type N and type M bursts are given for the first time. (8) Combining high spatial resolution data, a moving type Ⅳ bursts and its associated fast fine structures are investigated.