【摘要】 结合紫金山天文台的太阳射电观测资料,对太阳耀斑中的射电漂移结构进行研究。过去的观测发现,漂移结构太阳耀斑产生的射电爆发伴随一种特殊的结构。观测特征是其中的细结构是由许多小脉冲组成,但整体随时间漂移。过去观测到的这种结构是向低频漂移。观测上他们与太阳耀斑中的等离子团抛射相对应。2003年3月18日,紫金山天文台射电频谱仪观测到的漂移结构是漂向高频。更多还原

【Abstract】 We present the data of high-frequency drift radio structures observed by the spectrometer of the Purple Mountain Observatory(PMO) over the frequency range of 4.5-7.5GHz in the solar flare of March 18,2003.Such structures have been observed to have fine features consisting of short pulses,but drift with time as a whole.The drifting structures take place before the soft X-ray maximum,almost at the maximum of hard X-ray flux of 25-50keV.For the first time,drifts toward higher frequencies are detected in this kind of radio structures near 6GHz.更多还原