Search for a stochastic gravitational wave background at 1-5 Hz with a torsion bar
Search for a stochastic gravitational wave background at 1-5 Hz with a torsion bar
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使用扭杆搜索 1-5 Hz 的随机引力波背景
DOI：
10.1103/physrevd.94.042003
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发表时间：
2016
影响因子：
5
通讯作者：
Kazunari; et al.
中科院分区：
文献类型：
--
作者：
Kuwahara;Yuya; Shoda;Ayaka; Eda;Kazunari; et al.
我们使用扭杆天线（TOBA）在1-5 Hz的频率范围内设置了随机引力波（GW）背景的第一个上限。TOBA是一种GW探测器，设计用于探测地面上的低频GW，具有由入射GW旋转的两个正交测试质量。我们使用TOBA进行了24小时的观察运行，并根据频率统计和贝叶斯统计设置了上限。最严格的值是（频率论）和（贝叶斯）都在2.58赫兹，其中是哈勃常数的单位和是GW的能量密度每对数频率间隔的封闭密度的单位。
We set the first upper limit on the stochastic gravitational wave (GW) background in the frequency range of 1–5 Hz using a torsion-bar antenna (TOBA). A TOBA is a GW detector designed for the detection of low frequency GWs on the ground, with two orthogonal test masses rotated by the incident GWs. We performed a 24-hour observation run using the TOBA and set upper limits, based on frequentist statistics and Bayesian statistics. The most stringent values are(frequentist) and(Bayesian) both at 2.58 Hz, whereis the Hubble constant in units ofandis the GW energy density per logarithmic frequency interval in units of the closure density.