【摘要】 本文根据1981年5月16日和10月12日光学、射电、硬X射线等观测资料的对比,提出了一个模型,解释了太阳大耀斑脉冲相微波毫秒级尖峰辐射的一些特征及其与各种共生现象(例如Ⅲ型、Ⅳ_DCIM型和硬X射线爆发等)物理过程之间的内在联系。更多还原

【Abstract】 From the comparing of the observational data of the microwave millisecond spike emissions (MMSE’s) and the associated optical, radio and hard X-ray phenomena during the impulsive phase of large solar flares on May 16 and Oet. 12, 1981, we found that strong MMSE’s occurred during the event of May 16, 1981 and no MMSE appeared but more intense microwave burst at 10.6 cm during the event of Oct. 12. We proposed a model and utilized the mechanism of electron-cyclotron instability associated with a hollow-beam of electrons to account for the physical reasons. Further, we showed that there exist some intimate links between MMSE’s and the associated phenomena in the physical processes of generation and evolution during the impulsive phase of large flares. Obviously, the discovery of these links with one another i.s important for clarifying the mechanism of large solar flares.更多还原