arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0811.2272astro-ph
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根据第23太阳活动周事件的统计分析预测太阳耀斑

Prediction of Solar Flares from a Statistical Analysis of Events during Solar Cycle 23

Z. Q. Qu

摘要:

本文根据对第23周太阳活动的统计分析,提出了太阳耀斑的中短期预报方法。小波分析结果表明,C级和M级耀斑的时间分布在这一周期中均表现出13.2和26.4个月的两个主周期;另一方面,特定磁位形的活动区及其演化使C类耀斑的产率较高,而高能(M和X类)耀斑的产率相对较低。此外,通过考虑活性区的可测量动力学特征,即,由于太阳黑子的自转,一些特定类型的活动区被观测到具有高能量耀斑产生率,超过66%。所揭示的活动周期性可用于C级和M级耀斑的中期预报,而活动区的高生产力则构成了单个高能耀斑短期预报的基础。

英文摘要:

Ways to give medium- and short-term predictions of solar flares are proposed according to the statistical analysis of events during solar cycle 23. On one hand, the time distribution of both C and M class flares shows two main periods of 13.2 and 26.4 months in this cycle by wavelet analysis. On the other hand, active regions of specific magnetic configurations and their evolutions give high productivity of C class flares but relatively low productivity of energetic (M and X class) flares. Furthermore, by considering the measurable kinetic features of active regions, i.e., the rotation of the sunspots, some active regions of specified types are observed to have high energetic flare productivity, above 66%. The periodicity of the activity revealed can be used for medium-term C and M class flare forecasting and the high productivity of active regions forms the basis for short-term prediction of individual energetic flares.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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