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arXiv 1002.0413astro-ph.SR
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太阳活动周期间耀斑和黑子的统计特性

Statistical properties of flares and sunspots over the solar cycle

M. Temmer

摘要:

本文回顾了太阳活动指数统计研究的结果。第23周期最低阶段的延长引起了第23周期固有特点的问题。最重要的太阳活动指数是相对太阳黑子数,虽然大多数其他指数密切相关,但它们的峰值活动之间存在1-2年的变化。这些变化揭示了一个22年的模式,可以归因于太阳内部或发电机相关的过程。发现第23周期的最小相位并不例外。研究过去150年的相对太阳黑子数,观察到更长时间的极小太阳周期。自1920年以来,太阳活动相当高(“现代最大值”),第23周可能是这一阶段结束的预兆。

英文摘要:

The present paper reviews results derived from statistical studies on solar activity indices. The prolonged minimum phase of cycle 23 raised the question of peculiarities inherent in cycle 23. The most important solar activity index is the relative sunspot number and though most of other indices are closely related, shifts are obtained between their peak activity of the order of 1-2 years. These shifts reveal a 22-yr pattern which can be attributed to solar interior or dynamo related processes. The minimum phase of cycle 23 is not found to be exceptional. Investigating the relative sunspot numbers over the past 150 years, solar cycles of more prolonged minima are observed. Since 1920 solar activity is quite high ('modern maximum') and cycle 23 might be the herald of the end of this phase.

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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