Time-Series Analysis of Super-Kamiokande Measurements of the Solar Neutrino Flux
Time-Series Analysis of Super-Kamiokande Measurements of the Solar Neutrino Flux
复制标题
太阳中微子通量的超级神冈探测器测量的时间序列分析
DOI：
10.1086/377079
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Peter A. Sturrock
中科院分区：
文献类型：
--
作者：
Peter A. Sturrock
最近公布的超级神冈数据集包括184个箱，每个箱约10天，从1996年5月到2001年7月。采集时间的功率谱在频率ν = 35.98（周期10.15天）处有一个巨大的峰值，其中频率以每年的周期测量，导致功率谱严重混叠，使分析复杂化。在由似然程序形成的功率谱中，在0-100范围内的最强峰在ν = 26.57（周期13.75天）处，S = 11.26。对于0-40的范围，第二强峰位于9.42（周期38.82天），S = 7.3。由于26.57 + 9.42 = 35.99，我们推断9.42处较弱的峰是26.57处较强峰的别名。当我们从数据中减去26.57处的振荡时，得到的CLEAN光谱在0-100范围内没有功率超过6.3的峰，并且在0-40范围内没有功率超过5.0的峰。我们注意到，26.57福尔斯落在26.36-27.66波段，形成于太阳赤道部分会合旋转频率范围的两倍。我们从洗牌测试中发现，在该频带中偶然获得S = 11.26或更大的峰值的概率为0.1%。因此，这一新的结果支持了以前的证据，发现在Homestake和GALLEX-GNO数据，旋转调制的太阳中微子通量。频率25.57年-1点的调制源或附近的速跃层。
A recently released data set of Super-Kamiokande data comprises 184 bins of about 10 days each, from 1996 May to 2001 July. The power spectrum of the acquisition times has a huge peak at frequency ν = 35.98 (period 10.15 days), where frequencies are measured in cycles per year, leading to severe aliasing of the power spectrum that complicates the analysis. The strongest peak in the range 0-100 in a power spectrum formed by a likelihood procedure is at ν = 26.57 (period 13.75 days) with S = 11.26. For the range 0-40, the second-strongest peak is at 9.42 (period 38.82 days) with S = 7.3. Since 26.57 + 9.42 = 35.99, we infer that the weaker peak at 9.42 is an alias of the stronger at 26.57. When we subtract the oscillation at 26.57 from the data, the resulting CLEAN spectrum has no peak with power in excess of 6.3 in the range 0-100, and none with power in excess of 5.0 in the range 0-40. We note that 26.57 falls in the band 26.36-27.66, formed from twice the range of synodic rotation frequencies of an equatorial section of the Sun. We find from the shuffle test that the probability of obtaining a peak of S = 11.26 or more by chance in this band is 0.1%. This new result therefore supports previous evidence, found in Homestake and GALLEX-GNO data, for rotational modulation of the solar neutrino flux. The frequency 25.57 yr-1 points to a source of modulation at or near the tachocline.
影响因子：
8.6
作者：
Fukuda, S;Fukuda, Y;Young, KK
通讯作者：
Young, KK
影响因子：
4.4
作者：
Fukuda, S;Fukuda, Y;Wilkes, RJ
通讯作者：
Wilkes, RJ