Results From an Einstein@Home Search for Continuous Gravitational Waves From G347.3 at Low Frequencies in LIGO O2 Data
Results From an Einstein@Home Search for Continuous Gravitational Waves From G347.3 at Low Frequencies in LIGO O2 Data
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DOI：
10.3847/1538-4357/ac35cb
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发表时间：
2021-08
期刊：
影响因子：
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通讯作者：
J. Ming;M. Papa;H. Eggenstein;B. Machenschalk;B. Steltner;R. Prix;B. Allen;O. Behnke
中科院分区：
文献类型：
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作者：
J. Ming;M. Papa;H. Eggenstein;B. Machenschalk;B. Steltner;R. Prix;B. Allen;O. Behnke
我们给出了利用LIGO O2公开数据搜索来自超新星遗迹G347.3-0.5中子星的频率在20至400赫兹之间的周期性引力波信号的结果。搜索被部署在志愿者计算项目Einstein@Home上，数千名参与者捐赠了计算周期，使这一努力成为可能。我们没有发现重要的候选信号，并设置了迄今为止来自目标的引力波信号幅度的最具约束性的上限，对应于大部分频带的变形低于10−6。在最佳应变灵敏度频率附近，我们给出了h090%≈7.0×10−26引力波固有振幅的90%置信度上限。在大多数频率范围内，我们的上限是以年龄为基础的间接上限的20倍。
We present results of a search for periodic gravitational wave signals with frequencies between 20 and 400 Hz from the neutron star in the supernova remnant G347.3-0.5 using LIGO O2 public data. The search is deployed on the volunteer computing project Einstein@Home, with thousands of participants donating compute cycles to make this endeavour possible. We find no significant signal candidate and set the most constraining upper limits to date on the amplitude of gravitational wave signals from the target, corresponding to deformations below 10−6 in a large part of the band. At the frequency of best strain sensitivity, near 166 Hz, we set 90% confidence upper limits on the gravitational wave intrinsic amplitude of h090%≈7.0×10−26 . Over most of the frequency range our upper limits are a factor of 20 smaller than the indirect age-based upper limit.