论文标题

太阳能周期太阳能绿线电晕的空间和时间分布18-24

Spatial and Temporal Distribution of Solar Green Line Corona for Solar Cycles 18-24

论文作者

Takalo, Jouni J.

论文摘要

绿色电晕(Fe XIV)和太阳活性(CI)的冠状指数的均质冠状数据集(HCD)已用于研究太阳能循环中18-24的时间久次分布,并与日光点,磁场和太阳能无线电磁通的相似分布进行比较。最重要的结果是:(a)与周期最大相关的冠状强度分布在个体周期中是不同的,(b)HCD从每个周期中的中纬度中的极点迁移,即使在非常弱的周期中,同样的循环也是有效的,而赤道迁移(c)HCD的总体较高的HCS比北部的一部分(HC)的分布略高于Southern s Southern,HD在HD中(hd),hd在HD中,e(d)最强的光球磁场(B> 50高斯)和黑子组的直方图,(e)Gnevyshev间隙至少在CI上至少95%的信心确认,但是,奇数甚至周期的行为不同。主成分分析(PCA)表明,第一和第二个成分占CI总变化的87.7%和7.3%。此外,与其他周期相比,绿色电晕的PC2在21周期截然不同。

Homogeneous coronal data set (HCDS) of the green corona (Fe XIV) and coronal index of the solar activity (CI) have been used to study time-latitudinal distribution in solar cycles 18-24 and compared with similar distribution of sunspots, the magnetic fields and the solar radio flux 10.7 cm. The most important results are: (a) distribution of coronal intensities related to the cycle maximum are different for individual cycles, (b) the poleward migration of the HCDS from mid latitudes in each cycle exists, even in extremely weak Cycle 24, and the same is valid for the equatorward migration (c) the overall values of HCDS are slightly stronger for the northern hemisphere than for the southern one, (d) distribution of the HDCS are in coincidence with strongest photospheric magnetic fields (B>50 Gauss) and histogram of the sunspot groups, (e) Gnevyshev gap was confirmed with at least 95% confidence in the CI, however, with different behavior for odd and even cycles. Principal component analysis (PCA) showed that the first and second component account for 87.7% and 7.3% of the total variation of the CI. Furthermore, the PC2 of the green corona was quite different for cycle 21, compared with other cycles.

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