论文标题
来自已知脉冲星的连续重力波的极化状态的地球旋转和时间域重建
Earth rotation and time-domain reconstruction of polarization states for continuous gravitational waves from a known pulsar
论文作者
论文摘要
我们考虑了一般度量理论中地球旋转对地面引力波（GW）检测器天线模式的影响，该理论最多允许在四维时段中最多六个极化状态（两个Spin-0，两个Spin-1和两个SPIN-1和两个SPIN-2）。通过定义来自已知脉冲星的连续GW的周期性平均天线矩阵，我们表明，每个极化状态的波形可以从单个检测器处的给定应变输出集中在时域中唯一地重建。还讨论了限制额外极化模式的传播速度，如果它们与横向无关模式共存，也会讨论。我们还检查了由于日期调制的长度以及脉冲星旋转期的世俗变化而可能的影响。
We consider effects of the Earth rotation on antenna patterns of a ground-based gravitational wave (GW) detector in a general metric theory that allows at most six polarization states (two spin-0, two spin-1 and two spin-2) in a four-dimensional spacetime. By defining the cyclically averaged antenna matrix for continuous GWs from a known pulsar, we show that waveforms for each polarization state can be uniquely reconstructed in time domain from a given set of the strain outputs at a single detector. Constraining the propagation speed of extra polarization modes, if they coexist with the transverse-traceless modes, is also discussed. We examine also possible effects due to the length-of-day modulation as well as a secular change in the pulsar spin period.
