论文标题
二进制系统中的轴振荡：角度手术
Axion oscillations in binary systems: angle-action surgery
论文作者
论文摘要
标量，张量波诱导开普勒系统中的振荡扰动，可以通过测量脉冲星的时间定时残留物进行探测。在本文中，我们考虑了Roemer Time延迟对超轻轴线暗物质产生的相干振荡的烙印。我们使用角度形式主义来计算观察到的信号的时间演变及其对轨道参数和轴突相位的依赖性。我们得出了任意二进制脉冲星质量比和偏心率的精确分析表达式，从而减轻了对长数值整合的需求。我们强调了预期的信噪比与谐波振荡器对外部振荡驱动器的响应的相似性。我们通过数值模拟验证理论预测。我们的结果为数值代码和分析程序提供了有用的基准，并希望可以激励在真实数据中搜索此类烙印。
Scalar, tensor waves induce oscillatory perturbations in Keplerian systems that can be probed with measurements of pulsar timing residuals. In this paper, we consider the imprint of coherent oscillations produced by ultralight axion dark matter on the Roemer time delay. We use the angle-action formalism to calculate the time evolution of the observed signal and its dependence on the orbital parameters and the axion phase. We derive exact analytical expressions for arbitrary binary pulsar mass ratio and eccentricity, alleviating the need for long numerical integrations. We emphasize the similarity of the expected signal-to-noise ratio with the response of a harmonic oscillator to an external oscillatory driving. We validate our theoretical predictions with numerical simulations. Our results furnish a useful benchmark for numerical codes and analysis procedures and, hopefully, will motivate the search for such imprints in real data.
