论文标题
使用灰色警报器解决哈勃 - 莱玛特张力
Using Gray Sirens to Resolve the Hubble-Lemaître Tension
论文作者
论文摘要
从宇宙微波背景和IA型超新星型的Hubble-lema-常数$（H_0）$的测量值彼此矛盾。解决这种张力的一种方法是使用一种独立的方法来测量$ H_0 $。这可以通过使用重力波（GW）观测来完成。先前的作品表明，随着GW检测器网络的下一代开始，将有可能用二进制黑洞系统（也称为黑暗的警报器）限制$ H_0 $比$ 2 \％$（足以解决张力）。如果检测到GW和以下电磁对应物，则明亮的警笛等二进制中子星系也可以帮助解决张力。在这项工作中，我们评估了使用中子星 - 黑洞（NSBH）合并来测量哈勃 - 莱玛特常数的潜力，无论是黑暗的警报还是明亮的哨兵，都将它们分配给它们灰色的警笛。我们发现，Voyager网络可能能够在5年的观察范围内使用NSBH合并来解决张力，而包括宇宙资源管理器探测器的下一代网络和Einstein望远镜将能够将$ H_0 $衡量到低价级别。
The measurement of the Hubble-Lemaître constant $(H_0)$ from the cosmic microwave background and the Type IA supernovae are at odds with each other. One way to resolve this tension is to use an independent way to measure $H_0$. This can be accomplished by using gravitational-wave (GW) observations. Previous works have shown that with the onset of the next-generation of GW detector networks, it will be possible to constrain $H_0$ better than $2\%$ (which is enough to resolve the tension) with binary black hole systems, also called dark sirens. Bright sirens like binary neutron star systems can also help resolve the tension if both the GW and the following electromagnetic counterpart are detected. In this work, we assess the potential of using neutron star-black hole (NSBH) mergers to measure the Hubble-Lemaître constant, both as dark sirens as well as bright sirens, thus, assigning them the term gray sirens. We find that the Voyager network might be able to resolve the tension using NSBH mergers in an observation span of 5 years, whereas next-generation networks which include the Cosmic Explorer detectors and the Einstein Telescope will be able to measure the $H_0$ to sub-percent level.
