论文标题
FRB深色警报：测量使用未定位的快速无线电爆发的哈勃常数
FRB dark sirens: Measuring the Hubble constant with unlocalized fast radio bursts
论文作者
论文摘要
快速无线电爆发（FRB）可用于通过使用Macquart关系来测量宇宙学参数。但是，目前，只有少量的FRB事件被定位为具有已知红移的星系。受到引力波宇宙学中暗警笛的启发，我们开发了一种贝叶斯方法，使用未定位的FRB和Galaxy目录数据在统计上测量哈勃常数，这使得可以从大量的FRB数据中限制宇宙学参数，而没有已知的红品，但包括真实的Galaxy信息，包括真实的Galaxy信息。我们假设银河系托管FRB的概率与该星系的发光度成正比，并将Illablistng仿真的结果用作FRB主宿主星系参数的先验。忽略某些系统的错误，我们仅使用十二个未定位的FRB事件与大爆炸核合成结果相结合，即，即$ h_0 = 80.4^{+24.1} _ { - 19.4} $ s $ s $ s $^{ - 1} $ 68，仅使用大爆炸核合成结果，获得了第一个统计$ H_0 $测量。 间隔）。该方法还可以完善以限制其他宇宙学和FRB参数。它适用于仍然具有多个潜在宿主的稳定定位的FRB。
Fast radio bursts (FRBs) can be used to measure cosmological parameters by employing the Macquart relation. However, at present, only a small number of FRB events are localized to host galaxies with known redshifts. Inspired by the dark siren method in gravitational wave cosmology, we develop a Bayesian method to statistically measure the Hubble constant using unlocalized FRBs and galaxy catalog data, which makes it possible to constrain cosmological parameters from a large number of FRB data without known redshifts, meanwhile including the real galaxy information. We assume that the probability for a galaxy to host an FRB is proportional to the luminosity of this galaxy and use the results from the IllustrisTNG simulation as the priors of FRB host galaxy parameters. Ignoring some systematic errors, we obtain the first statistical $H_0$ measurement only using twelve unlocalized FRB events combined with the big bang nucleosynthesis result, i.e., $H_0=80.4^{+24.1}_{-19.4}$ km s$^{-1}$ Mpc$^{-1}$, ($68\%$ highest-density interval). This method can also be refined to constrain other cosmological and FRB parameters. It is applicable to well-localized FRBs that still have several potential hosts.
