论文标题
快速无线电爆发色散度量的分布/FRB目录1：对FRB的起源的影响
Distribution of fast radio burst dispersion measures in CHIME/FRB Catalog 1: implications on the origin of FRBs
论文作者
论文摘要
最近，Chime/FRB Project发布了其第一个快速广播爆发（FRB）目录（以下简称Catalog 1），该目录完全包含536个独特的爆发。在此大尺寸目录中最新的FRB的帮助下，我们旨在调查FRB人群的分散措施（DM）或RedShift（$ Z $）分布，并且可以使用该问题的解决方案来阐明FRB起源问题。在这项研究中，我们采用了M \＆E 2018型号，以适合观察到的$ z $在目录中的$ z $分布1。在M \＆E 2018型号中，我们对$φ（z）$函数（即每次com comoving量的适当时间的爆发数量）非常感兴趣，并由星形形成率（SFR）$ n $ n代表。我们的$ n $ $ n $估计值为$ 0.0 _ { - 0.0}^{+0.6} $（$ 0.0 _ { - 0.0}^{+2.1} $）在68（95）％的置信度下，这意味着FRB种群与红外或较高的sfat s frb cy eft，frb总体相比，frb人群的发展。特别是，本研究估计的$ n $值的一致性为源自年轻磁铁的FRB的假设提供了潜在的支持。
Recently, CHIME/FRB project published its first fast radio burst (FRB) catalog (hereafter, Catalog 1), which totally contains 536 unique bursts. With the help of the latest set of FRBs in this large-size catalog, we aim to investigate the dispersion measure (DM) or redshift ($z$) distribution of the FRB population, and solution of this problem could be used to clarify the question of FRB origin. In this study, we adopted the M\&E 2018 model, to fit the observed $z$ distribution of FRBs in Catalog 1. In the M\&E 2018 model, we are mostly interested in the $Φ(z)$ function, i.e., number of bursts per proper time per comoving volume, which is represented by the star formation rate (SFR) with a power-law index $n$. Our estimated value of $n$ is $0.0_{-0.0}^{+0.6}$ ($0.0_{-0.0}^{+2.1}$) at the 68 (95) per cent confidence level, implying that the FRB population evolves with redshift consistent with, or faster than, the SFR. Specially, the consistency of the $n$ values estimated by this study and the SFR provides a potential support for the hypothesis of FRBs originating from young magnetars.
