Relation between solar narrow-band decimetre-wave bursts and associated X-ray bursts
Relation between solar narrow-band decimetre-wave bursts and associated X-ray bursts
复制标题
太阳窄带分米波爆发与相关 X 射线爆发之间的关系
作者：
S. Enome;L. Orwig
在对木星十度辐射的成功解释的刺激下，人们提出了一些理论模型，用于在太阳耀斑中运行的脉泽机制或普通相对论回旋共振机制，以及通过脉泽放大的无线电波将能量穿过磁场传递到电子气体的理论模型。很多努力都是针对太阳耀斑射电尖峰爆发的观测。这里我们比较了25个太阳耀斑的窄带分米波尖峰爆发与相应的x射线事件。我们发现，在相同观测量的硬x射线发射下，分米脉冲爆发比普通脉冲微波爆发强102 - 103倍。这一特征，加上对100%圆偏振的观测，有力地支持了分米脉冲爆发的脉泽起源。
Theoretical models have been proposed, stimulated by a successful account of the jovian decametric radiation1, for a maser mechanism, or a normal relativistic cyclotron resonance mechanism, operating in solar flares, and for transport of energy across magnetic fields to the electron gas by maser-amplified radio waves2. Much effort has been directed towards observations of solar-flare radio spike bursts3–8. Here we compare solar narrow-band decimetre-wave spike bursts with corresponding X-ray events for 25 solar flares. We find that decimetre spike bursts are 102–103times stronger than normal impulsive microwave bursts for the same observed amount of hard X-ray emission. This feature, along with the observation of 100% circular polarization, strongly supports a maser origin for the decimetre spike bursts.