论文标题
精确宇宙学的途径：四个有希望的晚期宇宙学探针之间的协同作用
A path to precision cosmology: synergy between four promising late-universe cosmological probes
论文作者
论文摘要
在接下来的几十年中，有必要伪造新的后期宇宙学探针，以同时同时限制哈勃常数和黑暗能量状态的方程。在这项工作中，我们证明了四个典型的晚期宇宙学探针，即21厘米强度映射（IM），快速无线电爆发（FRB），引力波（GW）标准警报器和强烈的重力透镜（SGL），预计将被预计在解决方案的工具中被释放到有用的工具中。我们建议它们的协同作用在宇宙学中相当重要。我们基于氢强度和实时分析实验（HIRAX），平方英里阵列（SKA），爱因斯坦望远镜（ET）以及大型概要调查望远镜（LSST）的假设观察，模拟了21 cm IM，FRB，GW和SGL数据。我们发现，这四个探针在宇宙学约束中显示出明显不同的参数退化方向，因此它们的任何组合都可以打破参数变性，从而显着提高了约束精度。 The joint 21 cm IM+FRB+GW+SGL data can provide the constraint errors of $σ(Ω_{\rm m})=0.0022$ and $σ(H_0)=0.16\ \rm km\ s^{-1}\ Mpc^{-1}$ in the $Λ$CDM model, which meet the standard of precision cosmology, i.e.,参数的约束精度大于1％。此外，联合数据在$ W $ CDM型号中给出$σ（w）= 0.020 $，$σ（W_0）= 0.066 $和$σ（W_A）= 0.25 $中的$ W_0W_A $ CDM型号，这些模型都比CMB+BAO+BAO+SN数据所获得的约束更好。我们表明，四个晚期宇宙学探针之间的协同作用具有宏伟的前景。
In the next decades, it is necessary to forge new late-universe cosmological probes to precisely constrain the Hubble constant and the equation of state of dark energy simultaneously. In this work, we show that the four typical late-universe cosmological probes, the 21 cm intensity mapping (IM), fast radio burst (FRB), gravitational wave (GW) standard siren, and strong gravitational lensing (SGL), are expected to be forged into useful tools in solving the Hubble tension and exploring dark energy. We propose that the synergy of them is rather important in cosmology. We simulate the 21 cm IM, FRB, GW, and SGL data based on the hypothetical observations of the Hydrogen Intensity and Real-time Analysis eXperiment (HIRAX), the Square Kilometre Array (SKA), the Einstein Telescope (ET), and the Large Synoptic Survey Telescope (LSST), respectively. We find that the four probes show obviously different parameter degeneracy orientations in cosmological constraints, so any combination of them can break the parameter degeneracies and thus significantly improve the constraint precision. The joint 21 cm IM+FRB+GW+SGL data can provide the constraint errors of $σ(Ω_{\rm m})=0.0022$ and $σ(H_0)=0.16\ \rm km\ s^{-1}\ Mpc^{-1}$ in the $Λ$CDM model, which meet the standard of precision cosmology, i.e., the constraint precision of parameters is better than 1%. In addition, the joint data give $σ(w)=0.020$ in the $w$CDM model, and $σ(w_0)=0.066$ and $σ(w_a)=0.25$ in the $w_0w_a$CDM model, which are all better than the constraints obtained by the CMB+BAO+SN data. We show that the synergy between the four late-universe cosmological probes has magnificent prospects.
