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Testing claims of the GW170817 binary neutron star inspiral affecting β-decay rates
Astroparticle Physics ( IF 4.2 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.astropartphys.2020.102431
P.A. Breur , J.C.P.Y. Nobelen , L. Baudis , A. Brown , A.P. Colijn , R. Dressler , R.F. Lang , A. Massafferri , R. Perci , C. Pumar , C. Reuter , D. Schumann , M. Schumann , S. Towers

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 present radioactive β-decay rates of three independent sources 44Ti, 60Co and 137Cs, monitored during the same period by a precision experiment designed to investigate the decay of long-lived radioactive sources. We do not find any significant correlations between decay rates in a 5 h time interval following the GW170817 observation. This contradicts a previous claim published in this journal of an observed 2.5σ Pearson Correlation between fluctuations in the number of observed decays from two β-decaying isotopes (32Si and 36Cl) in the same time interval. By correcting for the choice of an arbitrary time interval, we find no evidence of a correlation above 1.5σ confidence. In addition, we argue that such analyses on correlations in arbitrary time intervals should always correct for the so-called Look-Elsewhere effect by quoting the global significance.

中文翻译:

GW170817 双中子星螺旋效应影响 β 衰变率的测试声明

摘要 2017年8月17日,Advanced LIGO和Advanced VIRGO探测到了来自双中子星螺旋体(GW170817)的第一个引力波信号。在这里,我们展示了三个独立源 44Ti、60Co 和 137Cs 的放射性 β 衰变率,在同一时期通过旨在研究长寿命放射源衰变的精密实验进行监测。我们没有发现在 GW170817 观察之后的 5 小时时间间隔内衰减率之间存在任何显着相关性。这与之前发表在本杂志上的声明相矛盾,即在同一时间间隔内观察到的两种 β 衰变同位素(32Si 和 36Cl)衰变数量波动之间的观察到 2.5σ 皮尔逊相关性。通过校正任意时间间隔的选择,我们没有发现相关性高于 1.5σ 置信度的证据。
更新日期:2020-05-01
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