What does the Sun tell and hint now
What does the Sun tell and hint now
复制标题
太阳现在告诉和暗示什么
DOI：
10.1088/1674-4527/9/9/002
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发表时间：
2009-07
影响因子：
1.8
通讯作者：
中科院分区：
文献类型：
--
作者：
自现代太阳活动周期开始以来一直保持的一些历史记录正在被当前的太阳打破：第 23 周期记录了最长的周期长度和落下时间；与其他周期相比，在该周期最短时间附近属于新周期的高纬度太阳黑子的纬度目前在统计上是最低的；连续58个月，高纬度地区一个月只出现一个或没有太阳黑子，这是首次观测到如此长的持续时间。太阳发电机被认为正在减速，原因是：（1）最小平滑月平均太阳黑子数量是自第 16 个周期以来最小的，甚至可能是所有现代太阳周期中最小的； (2)一旦两个相邻太阳黑子群首次观测的时间间隔大于14d，则应近似视为可见日盘上没有太阳黑子的观测，称为无斑点事件。无斑点事件在第 24 周期的最短时间附近出现的频率最高，最长的无斑点事件也出现在自第 16 周期以来观测太阳的最短时间附近。预计第 24 周期将具有从第 16 周期开始的最低水平的太阳黑子活动，甚至可能是所有现代太阳周期中的最低水平。
Some historical records, which have held since the beginning of modern solar activity cycles, are being broken by the present Sun: cycle 23 records the longest cycle length and fall time; latitudes of high-latitude sunspots belonging to a new cycle around the minimum time of the cycle are statistically the lowest at present, compared with those of other cycles; there are only one or no sunspots in a month appearing at high latitudes for 58 months, which is the first time that such a long duration has been observed. The solar dynamo is believed to be slowing down due to: (1) the minimum smoothed monthly mean sunspot number is the smallest since cycle 16 onwards, and even probably among all modem solar cycles; and (2) once the time interval between the first observations of two neighboring sunspot groups is larger than 14d, it should be approximately regarded as an observation of no sunspots on the visible solar disk, called a spotless event. Spotless events occur with the highest frequency around the minimum time of cycle 24, and the longest spotless event also appears around the minimum time for observations of the Sun since cycle 16. Cycle 24 is expected to have the lowest level of sunspot activity from cycle 16 onwards and even probably for all of the modem solar cycles.
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影响因子：
2.8
作者：
R. Wilson
通讯作者：
R. Wilson
影响因子：
--
作者：
L. Kejun;Su Tongwei;Li Hongfei
通讯作者：
L. Kejun;Su Tongwei;Li Hongfei
影响因子：
2.8
作者：
Ke-Jun Li;J. Wang;L. Zhan;H. Yun;H. Liang;H. J. Zhao;X. Gu
通讯作者：
Ke-Jun Li;J. Wang;L. Zhan;H. Yun;H. Liang;H. J. Zhao;X. Gu
影响因子：
2.8
作者：
Hoyt, DV;Schatten, KH
通讯作者：
Schatten, KH
DOI：
10.1360/03wd0154
发表时间：
2004-11
期刊：
--
影响因子：
--
作者：
李可军;苏同卫;梁红飞
通讯作者：
李可军;苏同卫;梁红飞