论文标题
强烈镜头快速无线电爆发的前景：同时测量纽顿后参数和哈勃常数
Prospects of strongly lensed fast radio bursts: Simultaneous measurement of post-Newtonian parameter and Hubble constant
论文作者
论文摘要
强力透镜效应是探测宇宙学模型和重力理论的强大工具。最近，已经提出了分别通过两个距离质量比，分别反映了透镜质量和动力学质量的两个距离比，从强镜头和偏转器的恒星运动学进行了时间延迟宇宙学，它们可以同时同时研究这两个参数。 Among strong lensing systems with different sources, strongly lensed fast radio bursts (FRBs) have been proposed as precision probes of the universe since the time delay $\sim$ 10 days between images could be measured extremely precisely because of their short duration of a few milliseconds.在这项工作中，我们研究了强烈镜头FRB同时通过模拟估算这两个参数的能力。考虑到即将到来的设施的预期FRB检测率和镜头概率，它很可能会在几年内积累10个镜头FRB，我们发现$ h_0 $可以确定为$ \ sim1.5 \％$ $ precision和$γ__{\ rm ppn} $，可以从$ \％$ \％$ \％$ \％$ \％$ \％$ \％。这些同时估计将有助于正确反映这两个基本参数之间的可能相关性。
Strong gravitational lensing effect is a powerful tool to probe cosmological models and gravity theories. Recently, the time-delay cosmography from strong lensing and the stellar kinematics of the deflector, which encode the Hubble constant and the post-Newtonian parameter via two distance ratios reflecting the lensing mass and dynamical mass respectively, have been proposed to investigate these two parameters simultaneously. Among strong lensing systems with different sources, strongly lensed fast radio bursts (FRBs) have been proposed as precision probes of the universe since the time delay $\sim$ 10 days between images could be measured extremely precisely because of their short duration of a few milliseconds. In this work, we investigate the ability of strongly lensed FRBs on simultaneously estimating these two parameters via simulations. Take the expected FRB detection rate of upcoming facilities and lensing probability into consideration, it is likely to accumulate 10 lensed FRBs in several years and we find that $H_0$ could be determined to a $\sim1.5\%$ precision and $γ_{\rm PPN}$ could be constrained to a $\sim8.7\%$ precision simultaneously from them. These simultaneous estimations will be helpful for properly reflecting the possible correlation between these two fundamental parameters.
