CAJ | 학술논문

根据不同的发射波模以及偏振态（偏振度与偏振方向）的快速时变特征，对1993年10月2日07:44:3407:44:52.99 UT期间的太阳射电事件进行了证认，认为这是一个由两群、总数约为40个尖峰(spike)结构组成的罕见的宽带事件，它的总带宽 >300 MHz、相对带宽 5%. 根据它们在2.545 GHz,2.645 GHz, 2.695 GHz和2.840 GHz上的流量资料，首次对一些spike结构作了谱分析. 发现spike结构谱的峰值频率，第一群呈现为随时间由高频向低频漂移的倾向，第二群基本上位于2.695 GHz上. spike谱的这些观测特征，可定性地用非热电子束流平均能量的时变特性来解释.对于第二群具有相同峰值频率的spike辐射，可能来自同一电子回旋脉泽不稳定区域.
근거불동적발사파모이급편진태（편진도여편진방향）적쾌속시변특정，대1993년10월2일07:44:3407:44:52.99 UT기간적 태양사전사건진행료증인，인위저시일개유량군、총수약위40개첨봉(spike)결구조성적한견적관대사건，타적총대관 >300 MHz、상대대관 5%. 근거타문재2.545 GHz,2.645 GHz, 2.695 GHz화2.840 GHz상적류량자료，수차대일사spike결구작료보분석. 발현spike결구보적봉치빈솔，제일군정현위수시간유고빈향저빈표이적경향，제이군기본상위우2.695 GHz상. spike보적저사관측특정，가정성지용비열전자속류평균능량적시변특성래해석.대우제이군구유상동봉치빈솔적spike복사，가능래자동일전자회선맥택불은정구역.
We have analyzed the solar radio event of 19931002, 074434074452 UT both with regard to spectrum and time variation of polarization. We found it to be a rare broad band spike event consisting of two groups of 40 spike structures with a total bandwidth >300 MHz and relative bandwidth < 5%. From their flux densities at 2.545, 2.645, 2.695 and 2.840 GHz, it is found that the peak frequency drifted from high to low frequencies for the first group and remained at almost at the same frequency of 2.695 GHz for the second group. The frequency drift probably means variation of average energy of the nonthermal electron beam with time, while the constant peak frequency probably means emission from the same region of electron cyclotron maser instability.