标题： 利用引力波对双黑洞上的暗电荷进行限制 显示英文标题

标题： Bounding dark charges on binary black holes using gravitational waves

摘要： 在与隐藏的$U(1)$对称性相关的类电荷暗物质模型中，天体物理黑洞可能会获得一种“暗”电荷，使得双黑洞的旋进动力学可以形式上由爱因斯坦-麦克斯韦理论描述。 电荷主要通过偶极项进入引力波信号，但它们的影响已知在相位上相当于第一后牛顿阶次，这使得能够测量双黑洞中单个黑洞的电荷与质量比$|q_i/m_i|$、$i = 1,2$的大小。 我们建立了一个贝叶斯分析来发现或限制双黑洞上的暗电荷。 在模拟中测试了我们的框架后，我们将它应用于第二引力波瞬变目录（GWTC-2）中选定的双黑洞信号，即那些质量较低以至于信噪比大部分处于旋进阶段的信号。 我们没有发现黑洞上有电荷的证据，并对$|q_i/m_i| \lesssim 0.2 - 0.3$的电荷与质量比设定了典型的 1-$\sigma$约束。 显示英文摘要

摘要： In models of minicharged dark matter associated with a hidden $U(1)$ symmetry, astrophysical black holes may acquire a "dark" charge, in such a way that the inspiral dynamics of binary black holes can be formally described by an Einstein-Maxwell theory. Charges enter the gravitational wave signal predominantly through a dipole term, but their effect is known to effectively first post-Newtonian order in the phase, which enables measuring the size of the charge-to-mass ratios, $|q_i/m_i|$, $i = 1,2$, of the individual black holes in a binary. We set up a Bayesian analysis to discover, or constrain, dark charges on binary black holes. After testing our framework in simulations, we apply it to selected binary black hole signals from the second Gravitational Wave Transient Catalog (GWTC-2), namely those with low masses so that most of the signal-to-noise ratio is in the inspiral regime. We find no evidence for charges on the black holes, and place typical 1-$\sigma$ bounds on the charge-to-mass ratios of $|q_i/m_i| \lesssim 0.2 - 0.3$.