No correlation between Solar flares and the decay rate of several $\beta$-decaying isotopes
Abstract
We report on finding no correlation between the two strongest observed Solar flares in September 2017 and the decay rates of Co, Ti and Cs sources, which are continuously measured by two independent NaI(Tl) detector setups. We test for variations in the number of observed counts with respect to the number of expected counts over multiple periods with timescales varying from 1 to 109 hours around the Solar flare. No excess or deficit exceeds the 2 global significance. We set a conservative lower limit on the decay rate deviation over an 84-hour period around the two correlated Solar flares in September 2017 to with 2 confidence. A fractional change of in the decay rate of Mn over a period of 84 hours was claimed with 7 significance during multiple Solar flares in December 2006. We exclude such an effect at 4.7 significance.
Keywords
Cite
@article{arxiv.1806.03202,
title = {No correlation between Solar flares and the decay rate of several $\beta$-decaying isotopes},
author = {J. R. Angevaare and L. Baudis and P. A. Breur and A. Brown and A. P. Colijn and R. F. Lang and A. Massafferri and J. C. P. Y. Nobelen and R. Perci and C. Reuter and M. Schumann},
journal= {arXiv preprint arXiv:1806.03202},
year = {2018}
}
Comments
Corrected typos, revised table values, results unchanged Will be published in Astroparticle Physics, Volume 103, December 2018, Pages 62-66 9 pages, 2 figures and 1 table. Keywords: Solar Flares, Radioactivity, Beta Decays, Neutrinos, Global Significance