Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-09-06
Astropart.Phys.26:174-185,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages plus 6 tables plus 11 figures
Scientific paper
10.1016/j.astropartphys.2006.06.
Since the GALLEX and GNO datasets were derived from closely related experiments, there is a natural tendency to merge them. This is perhaps appropriate for any analysis based on the hypothesis that the solar neutrino flux is constant, but it is not necessarily appropriate for an analysis that allows for possible variability, since the GALLEX and GNO experiments belong to different solar cycles. Moreover, we find significant differences between the GALLEX and GNO datasets. It appears, from inspection of the time series and histograms, that GNO measurements are compatible with the assumption that the solar neutrino flux is constant, but GALLEX measurements are not. Furthermore, power-spectrum analysis yields evidence of rotational modulation in GALLEX data but not in GNO data. We compare our results with those of Pandola, who claims that GALLEX-GNO data show no evidence for variability.
Caldwell David O.
Scargle Jeffrey D.
Sturrock Peter Andrew
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