https://doi.org/10.1140/epjc/s10052-024-12846-y
Regular Article - Experimental Physics
Generalized Lomb–Scargle analysis of 22 years of super-Kamiokande solar
B neutrino data
Department of Physics, IIT Hyderabad, 502284, Kandi, Telangana, India
Received:
12
March
2024
Accepted:
23
April
2024
Published online:
13
May
2024
We apply the generalized Lomb–Scargle periodogram to 22 years data of solar B neutrino fluxes detected by Super-Kamiokande. The primary motivation of this work was to check if the sinusoidal modulation at a frequency of 9.43/year (with a period of 38 days), which we had found to be marginally significant with the first 5 years of Super-K data, persists, with the accumulated data. We use four different metrics for the calculation of significance of any peaks in the Lomb–Scargle periodogram, which could be indicative of periodicities. We do not find any evidence for periodicity at the aforementioned frequency or any other frequency with the updated data. Therefore, the observed peak at 9.43/year with the first 5 years of Super-Kamiokande data was only a statistical fluctuation and its significance is negligible with the updated data.
© The Author(s) 2024
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3.