论文标题
使用Pulsar参数漂移检测亚纳霍尔茨引力波
Using Pulsar Parameter Drifts to Detect Sub-Nanohertz Gravitational Waves
论文作者
论文摘要
众所周知，很难检测到低于1〜NHz的引力波。随着周期超过当前的实验寿命，它们会在可观察到的而不是周期性相关性中引起缓慢的漂移。具有众所周知的内在贡献的可观察物提供了一种探究该制度的手段。在这项工作中，我们证明了使用观察到的脉冲星时间定时参数发现这种“超低”频率引力波的生存力，并提出了两个互补的可观察到的可观察到的可观察到的可观察到的，可以提取由超频引力引起的系统移动。使用这些参数的现有数据，我们搜索了连续波信号的超级频率制度，从超级质量黑洞的灵感预测附近找到灵敏度。我们看不到数据中的多余，设置了$ 1.3 \ times 10 ^{ - 12} $ $ 450〜 {\ rm pHz} $的应变限制，灵敏度大约Quadrativity以频率降低到$ 10〜 {\ rm phz} $。我们的搜索方法为重力波检测开辟了一个新的频率范围，并对天体物理学，宇宙学和粒子物理具有深远的影响。
Gravitational waves with frequencies below 1~nHz are notoriously difficult to detect. With periods exceeding current experimental lifetimes, they induce slow drifts in observables rather than periodic correlations. Observables with well-known intrinsic contributions provide a means to probe this regime. In this work, we demonstrate the viability of using observed pulsar timing parameters to discover such "ultralow" frequency gravitational waves, presenting two complementary observables for which the systematic shift induced by ultralow-frequency gravitational waves can be extracted. Using existing data for these parameters, we search the ultralow frequency regime for continuous-wave signals, finding a sensitivity near the expected prediction from inspirals of supermassive black holes. We do not see an excess in the data, setting a limit on the strain of $ 1.3 \times 10 ^{ - 12} $ at $ 450~{\rm pHz} $ with a sensitivity dropping approximately quadratically with frequency until $ 10~{\rm pHz}$. Our search method opens a new frequency range for gravitational wave detection and has profound implications for astrophysics, cosmology, and particle physics.
