21～24太阳活动周首个高纬黑子和首个X级耀斑的半球特点与太阳活动的南北不对称性的关系

The Relationship between First X-Class Flare,First High Latitude Sunspot Hemisphere Features and the Asymmetry of Solar Activity during Solar Cycle 21-24

利用GOES和SDO卫星监测的太阳软X射线耀斑的数据,发现在21~24太阳活动周期间,第1个X级耀斑与第1个高纬黑子都出现在同一半球。与高纬黑子表征的太阳活动南北半球的不对称性一样,一个太阳活动周第1个X级耀斑的出现,很可能预示着首先出现X级耀斑的半球,其太阳活动将比另一半球更剧烈。

Based on the data of solar X-ray flares observed by GOES,the first X-class flare that occurred during solar cycle 21-24 has been picked out and analyzed. Results show that the first high latitude sunspot and the first X-class flare occur in the same hemisphere of the Sun during solar cycle 21- 24. It appears to support that if the first X-class flare occurs in one hemisphere of the Sun,then the solar activity is very likely more intense in this hemisphere during the whole cycle. The first X-class flare of solar cycle 24 occurs in the south hemisphere of the Sun,suggesting that solar activities will be more intense in the south hemisphere during the whole solar cycle 24.