Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-01-27
Astrophys.J. 537 (2000) 1080-1085
Astronomy and Astrophysics
Astrophysics
17 pages, 5 figures, AasTeX
Scientific paper
10.1086/309069
It has been suggested by various authors that a significant anticorrelation exists between the Homestake solar neutrino data and the sunspot cycle. Some of these claims rest on smoothing the data by taking running averages, a method that has recently undergone criticism. We demonstrate that no significant anticorrelation can be found in the Homestake, data, or in standard 2- and 4-point averages of that data. However, when 3-, 5-, and 7-point running averages are taken, an anticorrelation seems to emerge whose significance grows as the number of points in the average increases. Our analysis indicates that the apparently high significance of these anticorrelations is an artifact of the failure to consider the loss of independence introduced in the running average process. When this is considered, the significance is reduced to that of the unaveraged data. Furthermore, when evaluated via parametric subsampling, no statistically significant anticorrelation is found. We conclude that the Homestake data can not be used to substantiate any claim of an anticorrelation with the sunspot cycle.
Boger J.
Cumming J. B.
Hahn R. L.
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