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Testing claims of the GW170817 binary neutron star inspiral affecting β-decay rates


Breur, P A; Nobelen, J C P Y; Baudis, L; Brown, Adam; Colijn, A P; Dressler, R; Lang, R F; Massafferri, A; Pumar, C; Reuter, C; Schumann, D; Schumann, M; Towers, S; Perci, R (2019). Testing claims of the GW170817 binary neutron star inspiral affecting β-decay rates. arXiv.org 1909.06990, University of Zurich.

Abstract

On August 17, 2017, the first gravitational wave signal from a binary neutron star inspiral(GW170817) was detected by Advanced LIGO and Advanced VIRGO. Here we presentradioactiveβ-decay rates of three independent sources44Ti,60Co and137Cs, monitoredduring the same period by a precision experiment designed to investigate the decay oflong-lived radioactive sources. We do not find any significant correlations between decayrates in a 5 h time interval following the GW170817 observation. This contradicts aprevious claim published in this journal of an observed 2.5σPearson Correlation betweenfluctuations in the number of observed decays from twoβ-decaying isotopes (32Si and36Cl) in the same time interval. By correcting for the choice of an arbitrary time interval,we find no evidence of a correlation above 1.5σconfidence. In addition, we argue thatsuch analyses on correlations in arbitrary time intervals should always correct for theso-called Look-Elsewhere effect by quoting the global significance.

Abstract

On August 17, 2017, the first gravitational wave signal from a binary neutron star inspiral(GW170817) was detected by Advanced LIGO and Advanced VIRGO. Here we presentradioactiveβ-decay rates of three independent sources44Ti,60Co and137Cs, monitoredduring the same period by a precision experiment designed to investigate the decay oflong-lived radioactive sources. We do not find any significant correlations between decayrates in a 5 h time interval following the GW170817 observation. This contradicts aprevious claim published in this journal of an observed 2.5σPearson Correlation betweenfluctuations in the number of observed decays from twoβ-decaying isotopes (32Si and36Cl) in the same time interval. By correcting for the choice of an arbitrary time interval,we find no evidence of a correlation above 1.5σconfidence. In addition, we argue thatsuch analyses on correlations in arbitrary time intervals should always correct for theso-called Look-Elsewhere effect by quoting the global significance.

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Additional indexing

Item Type:Working Paper
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2019
Deposited On:06 Jan 2020 15:32
Last Modified:07 Jan 2020 04:16
Series Name:arXiv.org
ISSN:2331-8422
OA Status:Green
Related URLs:https://arxiv.org/abs/1909.06990

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