太阳活动峰年和谷年期间黑子群与耀斑的统计分析

发布时间：2018-10-15 15:33

【摘要】：基于NOAA/SWPC公布的太阳活动数据,我们选取第24太阳活动峰年附近的12个连续月份(2011年7月至2012年6月)和第23太阳活动周谷年附近的12个连续月份(2005年7月至2006年6月),统计了这两段时间中太阳黑子群和耀斑的活动规律,并根据时间、黑子群分布纬度、寿命和磁场类型等对峰年和谷年进行了详细分析和比较,主要结论如下所述.(1)黑子群数随时间的变化在峰年和谷年均比较随机,峰年期间黑子数比谷年增多1.5倍左右.耀斑爆发与黑子群活动具有良好的相关性,但峰年期间存在某个月份耀斑数很少的现象,而谷年期间存在某个月份耀斑数集中增多的现象.(2)无论峰年还是谷年,δ类型黑子群的耀斑产率(耀斑总数与黑子群总数之比)最大,但β型黑子群产生的耀斑爆发最多.耀斑产率与磁场类型有密切关系,但与其所处太阳活动周中的阶段无关.(3)黑子群和耀斑的纬度分布的南北不对称性,以X级耀斑最为显著.峰年较谷年的耀斑数增加主要集中在C级和M级.(4)耀斑产率同黑子群寿命具有良好的相关性,但黑子群的数目同它们的寿命之间没有明显的规律.
[Abstract]:Based on the solar activity data published by NOAA/SWPC, We selected 12 consecutive months (July 2011 to June 2012) near the 24th solar active peak year and 12 consecutive months (July 2005 to June 2006) around the valley year of the 23rd solar cycle. The activity of sunspot groups and flares, The peak year and valley year are analyzed and compared in detail according to time, latitude of sunspot group distribution, lifetime and magnetic field type. The main conclusions are as follows: (1) the variation of sunspot group number with time is random in peak year and valley year. The number of sunspots in peak period is about 1.5 times higher than that in valley. There is a good correlation between flare burst and sunspot group activity, but there is a phenomenon that the number of flares is small in a certain month during the peak year. However, the number of flares increased in a certain month during a valley year. (2) in both peak and valley years, the flare yield (the ratio of total flares to the total number of sunspots) of 未 type sunspot group is the largest, but the flares of 尾 type sunspot group are the most. The flare yield is closely related to the type of magnetic field, but it is not related to the phase of the solar cycle. (3) the north-south asymmetry of the latitude distribution of the sunspot group and the flare is the most significant in the X-ray flare. The increase of flare number in peak year and valley year is mainly in C class and M order. (4) there is a good correlation between flare yield and sunspot group life, but there is no obvious rule between the number of sunspot group and their lifetime.
【作者单位】：中国科学院云南天文台;中国科学院太阳活动重点实验室;北京师范大学天文系;Physics
【基金】：国家自然科学基金(批准号:10933003,11078004,11073050,11203036) 国家重点基础研究发展计划(编号:2011CB811400) 中国科学院方向性项目(编号:KJCX2-EW-T07) 中国科学院太阳活动重点实验室开放课题(编号:KLSA201204)资助
【分类号】：P182.9

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