摘要
本文对回旋同步加速辐射的发射系数 ην/BN和吸收系数KνB/N作了精确的数值计算 ,采用幂指数δ为电子能谱指数δ的多项式的幂函数拟合 ,获得了一组新的 ην/BN和KνB/N的近似式 ,在大多数爆发出现的δ和谐波系数S(=ν/νB)范围内 ,其精度好于±7%和± 1 7% 。
In this paper a new set of simplified expressions for emissivity η ν BN and absorptivity K ν BN of gyrosynchrotron radiation is presented. They are expressed by power law functions in which the indexes are fitted by a polynomial of the electron energy index δ for their theoretical values calculated numerically. Their errors are, respectively, less than 7% and 17% for η ν BN and K ν BN within the most common ranges of δ and the harmonic number s . The accuracies are much better than those by linear fitting for power law indexes.
基金
国家自然科学基金
中国科学院天文委员会资助课题
关键词
太阳
微波爆发
同步加速辐射
Sun—— microwave burst——gyrosynchrotron radiation
