During the upward period of solar cycle 23, the imaging riometer at Zhongshan, Antarctica (geomag. lat. 74.5°S) was used to study the solar proton events and the X-ray solar flares which are associated with the a...During the upward period of solar cycle 23, the imaging riometer at Zhongshan, Antarctica (geomag. lat. 74.5°S) was used to study the solar proton events and the X-ray solar flares which are associated with the absorption events. In our study, the relationship between the absorption intensity and X-ray flux is found in a power form which is consistent with the theoretical result. The imaging riometer absorption data at Ny-Alesund, Svalbard reconfirm the above relationship. We also argue that only M-class flares can generate a significant daytime absorption.展开更多
基金the National Natural Science Foundation ofChina (Grant No. 49639160), the major project of Chinese Academy of Sciences (Grant No. KJ951-1-305) and the Oceanic Youth Foundation of State Oceanic Administration (Grant No. 98605).
文摘During the upward period of solar cycle 23, the imaging riometer at Zhongshan, Antarctica (geomag. lat. 74.5°S) was used to study the solar proton events and the X-ray solar flares which are associated with the absorption events. In our study, the relationship between the absorption intensity and X-ray flux is found in a power form which is consistent with the theoretical result. The imaging riometer absorption data at Ny-Alesund, Svalbard reconfirm the above relationship. We also argue that only M-class flares can generate a significant daytime absorption.
