摘要
本文介绍用回旋一同步加速辐射研究微波爆发频谱的计算方法和获得的一些结果。我们对频谱的峰值频率、高、低频部份给出了适于计算的公式,比较方法,从而获得射电源有意义的物理参数。特别是关于从高频谱指数计算电子能谱指数、射电源不均匀破场和有限边界造成低频流量下跌,是我们获得的重要结果。
The method and results of calculation of the spectral characteristics by applying gyro-synchrotron emission to solar microwave burst spectra are presented. The expressions suitable for computation are derived for the frequency at the peak flux density, the spectral index at the high frequency end, and for the spectra in low frequency range. Comparing the calculated spectral characteristics with the observed ones, one can obtain various parameters of the radio sources, such as the number of nonthermal electrons, the electron energy spectral index and the magnetic field. From our caculation, we suggest a new interpretation of the decrease of flux density in the low frequency range of solar microwave burst spectra as being caused by the inhomogeneity of magnetic field and the confinement of radio source.
