One of the authors (Liu) has made a trial on solar flare predictions based on the fuzzy classification of active regions. In this note, the results of [1] are analysed. First of all, the factors selected in [1] are di...One of the authors (Liu) has made a trial on solar flare predictions based on the fuzzy classification of active regions. In this note, the results of [1] are analysed. First of all, the factors selected in [1] are discussed with correlation analysis, and then the ROC method used in psychology and meteorology is introduced to assess the results of the predictions.展开更多
In the 21st solar cycle, the proper motions of the Type-1 sources have been discovered separately at 169 MHz (Observatory of Paris) and 460 MHz (Beijing Observatory), According to the moments that the sources were pas...In the 21st solar cycle, the proper motions of the Type-1 sources have been discovered separately at 169 MHz (Observatory of Paris) and 460 MHz (Beijing Observatory), According to the moments that the sources were passing the fringes of the '4×16' compound interferometer, the two dimensional positions of the Type1 sources were determined in oar observations. So, it is necessary for inferring the motions of sources that some conditions be assumed. In addition, the time展开更多
<正> The long decimeter wave from the sun is a solar phenomenon that has not been fully studied. Cole, Mullaly and Watkinson, and Little have separately, observed the sun with high resolving power (3′) at 408 M...<正> The long decimeter wave from the sun is a solar phenomenon that has not been fully studied. Cole, Mullaly and Watkinson, and Little have separately, observed the sun with high resolving power (3′) at 408 MHz, using the Mills Cross. They discovered two kinds of radio sources. One type is the slowly varying source of large size (about 7′) with low brightness temperature, and usually related to a plage. The other is of small size (<2′), with brightness temperature of 1.5—7.5×10~6°K. Perhaps, they are related with sunspot clusters. Abrami studied Type Ⅰ sources at 408 MHz, using a simple correlated interferometer, and discovered the complex structure of Type Ⅰ sources.展开更多
文摘One of the authors (Liu) has made a trial on solar flare predictions based on the fuzzy classification of active regions. In this note, the results of [1] are analysed. First of all, the factors selected in [1] are discussed with correlation analysis, and then the ROC method used in psychology and meteorology is introduced to assess the results of the predictions.
文摘In the 21st solar cycle, the proper motions of the Type-1 sources have been discovered separately at 169 MHz (Observatory of Paris) and 460 MHz (Beijing Observatory), According to the moments that the sources were passing the fringes of the '4×16' compound interferometer, the two dimensional positions of the Type1 sources were determined in oar observations. So, it is necessary for inferring the motions of sources that some conditions be assumed. In addition, the time
文摘<正> The long decimeter wave from the sun is a solar phenomenon that has not been fully studied. Cole, Mullaly and Watkinson, and Little have separately, observed the sun with high resolving power (3′) at 408 MHz, using the Mills Cross. They discovered two kinds of radio sources. One type is the slowly varying source of large size (about 7′) with low brightness temperature, and usually related to a plage. The other is of small size (<2′), with brightness temperature of 1.5—7.5×10~6°K. Perhaps, they are related with sunspot clusters. Abrami studied Type Ⅰ sources at 408 MHz, using a simple correlated interferometer, and discovered the complex structure of Type Ⅰ sources.
