Dhaygude, Akanksha and Desai, Shantanu
(2019)
Generalized Lomb-Scargle analysis of decay rate measurements at PTB and BNL.
arXiv.org.
Abstract
Recently Pomme et al [1] did an analysis of 36Cl radioactive decay data from measurements at
the Physikalisch-Technische Bundesanstalt (PTB), in order to verify the claims by Sturrock and
collaborators of an influence on beta-decay rates measured at Brookehaven National Lab (BNL)
due to the rotation-induced modulation of the solar neutrino flux. Their analysis excluded any
sinusoidal modulations in the frequency range from 0.2-20/year. We carry out an independent
analysis of the same PTB and BNL data using the generalized Lomb-Scargle periodogram, to look
for any statistically significant peaks in the range from 0 to 14 per year, and by evaluating the
significance of every peak using multiple methods. Our results for the PTB data are in agreement
with those by Pomme et al. For BNL data, we do find peaks at some of the same frequencies as
Sturrock et al, but the significance is much lower. All our analysis codes and datasets have been
made publicly available.
Actions (login required)
 |
View Item |
Altmetric
Altmetric