Generalized Lomb–Scargle analysis of $${^{123}\mathrm{I}}$$ and $${^{99\mathrm{m}}\mathrm{Tc}}$$ decay rate measurements

Gururajan, Gautham and Desai, Shantanu (2020) Generalized Lomb–Scargle analysis of $${^{123}\mathrm{I}}$$ and $${^{99\mathrm{m}}\mathrm{Tc}}$$ decay rate measurements. The European Physical Journal C, 80 (11). ISSN 1434-6044

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Abstract

We apply the generalized Lomb–Scargle periodogram to the 123I and 99 mTc decay rate measurements based on data taken at the Bronson Methodist Hospital. The aim of this exercise was to carry out an independent search for sinusoidal modulation for these radionuclei (to complement the analysis in Borrello et al.) at frequencies for which other radionuclei have shown periodicities. We do not find such a modulation at any frequencies, including annual modulation or at frequencies associated with solar rotation. Our analysis codes and datasets have been made publicly available.

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