论文标题
用天气检测引力波记忆效应
Detecting the gravitational wave memory effect with TianQin
论文作者
论文摘要
引力波记忆效应是一般相对性的预测。引力波信号中记忆效应的存在不仅提供了测试一般相对性的重要方面的机会，而且还代表了某些引力波事件对波形的潜在不可忽略的贡献。在本文中，我们研究了直接使用计划的空间引力波检测器-Tianqin直接检测引力波记忆效应的前景。我们发现，在其5年的操作中，对于Tianqin可以检测到的重力波信号，约0.5美元\ sim2.0 $信号可能包含位移记忆效应，而信号 - 噪声比（SNRS）大于3。这表明Tianqin有机会直接检测到位移存储器效应很低，但不能完全忽略了。相反，检测旋转记忆的机会可以忽略不计。我们还研究，在哪个参数空间中，记忆效应预计在波形建模中将具有重要意义。
The gravitational wave memory effect is a prediction of general relativity. The presence of memory effect in gravitational wave signals not only provides the chance to test an important aspect of general relativity, but also represents a potentially non-negligible contribution to the waveform for certain gravitational wave events. In this paper, we study the prospect of detecting the gravitational wave memory effect directly with the planned space-based gravitational wave detector -- TianQin. We find that during its 5 years operation, for the gravitational wave signals that could be detected by TianQin, about $0.5\sim2.0$ signals may contain displacement memory effect with signal-to-noise ratios (SNRs) greater than 3. This suggests that the chance for TianQin to detect the displacement memory effect directly is low but not fully negligible. In contrast, the chance to detect the spin memory is negligible. We also study that in which parameter space, the memory effect is expected to be significant in waveform modeling.
