论文标题
带有引力波的轴突暗物质的观察性约束
Observational constraint on axion dark matter with gravitational waves
论文作者
论文摘要
宇宙中的大多数物质是无形的和未知的，这称为暗物质。暗物质的候选者是Axion，它是一种超光粒子，作为解决CP问题的解决方案。轴在银河光环中形成云，放大并延迟一部分在云中传播的重力波。银河系被由许多轴片组成的暗物质光环所包围。因此，在紧凑的二进制合并报告的重力波信号之后，总是会预期特征性的次级重力波。在本文中，我们得出了次级引力波的现实振幅。然后，我们搜索具有特征时间延迟和持续时间的重力波，并使用针对它们进行优化的方法。我们发现没有明显的信号。假设轴是暗物质的主要组成部分，我们获得了与质量范围内违反重力部门的轴突耦合的约束，[$ 1.7 \ times 10^{ - 13}，8.5 \ times 10^{ - 12} { - 12} $ \ Mathrm {ev ev} $ sim $ \ sim b.
Most matter in the Universe is invisible and unknown, which is called dark matter. A candidate of dark matter is axion, which is an ultra-light particle motivated as a solution for the CP problem. Axions form clouds in a galactic halo, amplify, and delay a part of gravitational waves propagating in the clouds. The Milky Way is surrounded by the dark matter halo composed of a number of axion patches. Thus, the characteristic secondary gravitational waves are always expected right after the reported gravitational-wave signals from compact binary mergers. In this paper, we derive a realistic amplitude of the secondary gravitational waves. Then we search the gravitational waves having the characteristic time delay and duration with a method optimized for them. We find no significant signal. Assuming the axions are dominant component of dark matter, we obtain the constraints on the axion coupling to the parity violating sector of gravity for the mass range, [$1.7 \times 10^{-13}, 8.5 \times 10^{-12}$]$\mathrm{eV}$, which is at most $\sim 10$ times stronger than that from Gravity Probe B.
